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20020012212 = 22313788713729
BaseRepresentation
bin10010101001010010…
…010010010010110100
31220200020011222211210
4102221102102102310
5312000110342322
613110322201420
71306054203354
oct225122222264
956606158753
1020020012212
118543858542
123a687b3270
131b70893795
14d7cc14b64
157c28c070c
hex4a94924b4

20020012212 has 48 divisors (see below), whose sum is σ = 47110815360. Its totient is φ = 6616676352.

The previous prime is 20020012193. The next prime is 20020012247. The reversal of 20020012212 is 21221002002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1451364 + ... + 1465092.

It is an arithmetic number, because the mean of its divisors is an integer number (981475320).

Almost surely, 220020012212 is an apocalyptic number.

It is an amenable number.

20020012212 is an abundant number, since it is smaller than the sum of its proper divisors (27090803148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020012212 is a wasteful number, since it uses less digits than its factorization.

20020012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14760 (or 14758 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020012212 its reverse (21221002002), we get a palindrome (41241014214).

The spelling of 20020012212 in words is "twenty billion, twenty million, twelve thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 137 274 411 548 822 887 1644 1774 2661 3548 5322 10644 13729 27458 41187 54916 82374 121519 164748 243038 364557 486076 729114 1458228 1880873 3761746 5642619 7523492 11285238 12177623 22570476 24355246 36532869 48710492 73065738 146131476 1668334351 3336668702 5005003053 6673337404 10010006106 20020012212