211010021011212 has 12 divisors (see below), whose sum is σ = 492356715692856. Its totient is φ = 70336673670400.

The previous prime is 211010021011211. The next prime is 211010021011213. The reversal of 211010021011212 is 212110120010112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211010021011211) and next prime (211010021011213).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×211010021011212² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211010021011191 and 211010021011200.

It is not an unprimeable number, because it can be changed into a prime (211010021011211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8792084208789 + ... + 8792084208812.

It is an arithmetic number, because the mean of its divisors is an integer number (41029726307738).

Almost surely, 2^{211010021011212} is an apocalyptic number.

It is an amenable number.

211010021011212 is an abundant number, since it is smaller than the sum of its proper divisors (281346694681644).

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

211010021011212 is a wasteful number, since it uses less digits than its factorization.

211010021011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17584168417608 (or 17584168417606 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211010021011212 its reverse (212110120010112), we get a palindrome (423120141021324).

The spelling of 211010021011212 in words is "two hundred eleven trillion, ten billion, twenty-one million, eleven thousand, two hundred twelve".