1211002112200 has 24 divisors (see below), whose sum is σ = 2815579911330. Its totient is φ = 484400844800.

The previous prime is 1211002112161. The next prime is 1211002112213. The reversal of 1211002112200 is 22112001121.

It can be written as a sum of positive squares in 3 ways, for example, as 1121358159364 + 89643952836 = 1058942^2 + 299406^2 .

It is a super-2 number, since 2×1211002112200² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3027505081 + ... + 3027505480.

Almost surely, 2^{1211002112200} is an apocalyptic number.

1211002112200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211002112200 is an abundant number, since it is smaller than the sum of its proper divisors (1604577799130).

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

1211002112200 is a wasteful number, since it uses less digits than its factorization.

1211002112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055010577 (or 6055010568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211002112200 its reverse (22112001121), we get a palindrome (1233114113321).

The spelling of 1211002112200 in words is "one trillion, two hundred eleven billion, two million, one hundred twelve thousand, two hundred".