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20010222212 = 2210157186743
BaseRepresentation
bin10010101000101100…
…111100001010000100
31220122112202121111012
4102220230330022010
5311440104102322
613105332301352
71305605040161
oct225054741204
956575677435
1020010222212
118539281132
123a65471858
131b6b846696
14d7b7c7068
157c1ad9ae2
hex4a8b3c284

20010222212 has 24 divisors (see below), whose sum is σ = 35426943552. Its totient is φ = 9888588000.

The previous prime is 20010222179. The next prime is 20010222299. The reversal of 20010222212 is 21222201002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187313 + ... + 274055.

It is an arithmetic number, because the mean of its divisors is an integer number (1476122648).

Almost surely, 220010222212 is an apocalyptic number.

It is an amenable number.

20010222212 is a deficient number, since it is larger than the sum of its proper divisors (15416721340).

20010222212 is a wasteful number, since it uses less digits than its factorization.

20010222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87419 (or 87417 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20010222212 its reverse (21222201002), we get a palindrome (41232423214).

The spelling of 20010222212 in words is "twenty billion, ten million, two hundred twenty-two thousand, two hundred twelve".

Divisors: 1 2 4 101 202 404 571 1142 2284 57671 86743 115342 173486 230684 346972 8761043 17522086 35044172 49530253 99060506 198121012 5002555553 10005111106 20010222212