221312130101012 has 48 divisors (see below), whose sum is σ = 399130418985984. Its totient is φ = 107309205216000.

The previous prime is 221312130101003. The next prime is 221312130101137. The reversal of 221312130101012 is 210101031213122.

It is a super-2 number, since 2×221312130101012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13378598 + ... + 24932130.

It is an arithmetic number, because the mean of its divisors is an integer number (8315217062208).

Almost surely, 2^{221312130101012} is an apocalyptic number.

It is an amenable number.

221312130101012 is a deficient number, since it is larger than the sum of its proper divisors (177818288884972).

221312130101012 is a wasteful number, since it uses less digits than its factorization.

221312130101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11554280 (or 11554278 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 221312130101012 its reverse (210101031213122), we get a palindrome (431413161314134).

The spelling of 221312130101012 in words is "two hundred twenty-one trillion, three hundred twelve billion, one hundred thirty million, one hundred one thousand, twelve".