201222000012 has 96 divisors (see below), whose sum is σ = 542508744960. Its totient is φ = 57370705920.

The previous prime is 201221999989. The next prime is 201222000043. The reversal of 201222000012 is 210000222102.

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 31 ways as a sum of consecutive naturals, for example, 7744539 + ... + 7770477.

It is an arithmetic number, because the mean of its divisors is an integer number (5651132760).

Almost surely, 2^201222000012 is an apocalyptic number.

201222000012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201222000012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271254372480).

201222000012 is an abundant number, since it is smaller than the sum of its proper divisors (341286744948).

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

201222000012 is a wasteful number, since it uses less digits than its factorization.

201222000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29431 (or 29429 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 201222000012 its reverse (210000222102), we get a palindrome (411222222114).

The spelling of 201222000012 in words is "two hundred one billion, two hundred twenty-two million, twelve", and thus it is an aban number.