211212102010100 has 36 divisors (see below), whose sum is σ = 458557495444524. Its totient is φ = 84442954337280.

The previous prime is 211212102010061. The next prime is 211212102010277. The reversal of 211212102010100 is 1010201212112.

It can be written as a sum of positive squares in 6 ways, for example, as 807909750244 + 210404192259856 = 898838^2 + 14505316^2 .

It is a super-2 number, since 2×211212102010100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 523378127 + ... + 523781526.

Almost surely, 2^{211212102010100} is an apocalyptic number.

211212102010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211212102010100 is an abundant number, since it is smaller than the sum of its proper divisors (247345393434424).

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

211212102010100 is a wasteful number, since it uses less digits than its factorization.

211212102010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047161684 (or 1047161677 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211212102010100 its reverse (1010201212112), we get a palindrome (212222303222212).

The spelling of 211212102010100 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred two million, ten thousand, one hundred".