211220100012 has 24 divisors (see below), whose sum is σ = 492886438576. Its totient is φ = 70401051648.

The previous prime is 211220099989. The next prime is 211220100031. The reversal of 211220100012 is 210001022112.

It is a super-2 number, since 2×211220100012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 548833 + ... + 850680.

Almost surely, 2^211220100012 is an apocalyptic number.

It is an amenable number.

211220100012 is an abundant number, since it is smaller than the sum of its proper divisors (281666338564).

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

211220100012 is a wasteful number, since it uses less digits than its factorization.

211220100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412097 (or 1412095 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211220100012 its reverse (210001022112), we get a palindrome (421221122124).

The spelling of 211220100012 in words is "two hundred eleven billion, two hundred twenty million, one hundred thousand, twelve".