211212111112002 has 128 divisors (see below), whose sum is σ = 630189982033920. Its totient is φ = 50640266387520.

The previous prime is 211212111111979. The next prime is 211212111112031. The reversal of 211212111112002 is 200211111212112.

It is a happy number.

211212111112002 is a `hidden beast` number, since 21 + 121 + 211 + 111 + 200 + 2 = 666.

It is a super-2 number, since 2×211212111112002² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1953659928 + ... + 1953768035.

It is an arithmetic number, because the mean of its divisors is an integer number (4923359234640).

Almost surely, 2^{211212111112002} is an apocalyptic number.

211212111112002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211212111112002 is an abundant number, since it is smaller than the sum of its proper divisors (418977870921918).

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

211212111112002 is a wasteful number, since it uses less digits than its factorization.

211212111112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907428005 (or 3907427999 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211212111112002 its reverse (200211111212112), we get a palindrome (411423222324114).

The spelling of 211212111112002 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred eleven million, one hundred twelve thousand, two".