101221102012 has 12 divisors (see below), whose sum is σ = 183245098680. Its totient is φ = 48865359536.

The previous prime is 101221101997. The next prime is 101221102033. The reversal of 101221102012 is 210201122101.

It is a super-2 number, since 2×101221102012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101221101983 and 101221102001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436297738 + ... + 436297969.

It is an arithmetic number, because the mean of its divisors is an integer number (15270424890).

Almost surely, 2^101221102012 is an apocalyptic number.

It is an amenable number.

101221102012 is a deficient number, since it is larger than the sum of its proper divisors (82023996668).

101221102012 is a wasteful number, since it uses less digits than its factorization.

101221102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872595740 (or 872595738 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101221102012 its reverse (210201122101), we get a palindrome (311422224113).

The spelling of 101221102012 in words is "one hundred one billion, two hundred twenty-one million, one hundred two thousand, twelve".