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211213231202 = 21315653142607
BaseRepresentation
bin1100010010110101001…
…0100010010001100010
3202012011210221211221202
43010231102202101202
511430031041344302
6241010252321202
721155026562111
oct3045522422142
9665153854852
10211213231202
11816363a9826
1234b26a73202
1316bc048431c
14a319419c78
155762ad3202
hex312d4a2462

211213231202 has 16 divisors (see below), whose sum is σ = 319297030272. Its totient is φ = 104781184560.

The previous prime is 211213231181. The next prime is 211213231247. The reversal of 211213231202 is 202132312112.

It is a super-2 number, since 2×2112132312022 (a number of 23 digits) contains 22 as substring.

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, 1409783 + ... + 1552389.

It is an arithmetic number, because the mean of its divisors is an integer number (19956064392).

Almost surely, 2211213231202 is an apocalyptic number.

211213231202 is a deficient number, since it is larger than the sum of its proper divisors (108083799070).

211213231202 is a wasteful number, since it uses less digits than its factorization.

211213231202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148393.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211213231202 its reverse (202132312112), we get a palindrome (413345543314).

The spelling of 211213231202 in words is "two hundred eleven billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred two".

Divisors: 1 2 131 262 5653 11306 142607 285214 740543 1481086 18681517 37363034 806157371 1612314742 105606615601 211213231202