101211220012 has 48 divisors (see below), whose sum is σ = 205244282880. Its totient is φ = 42775088832.

The previous prime is 101211220007. The next prime is 101211220039. The reversal of 101211220012 is 210022112101.

It is a super-2 number, since 2×101211220012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101211219974 and 101211220001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615858 + ... + 762694.

It is an arithmetic number, because the mean of its divisors is an integer number (4275922560).

Almost surely, 2^101211220012 is an apocalyptic number.

It is an amenable number.

101211220012 is an abundant number, since it is smaller than the sum of its proper divisors (104033062868).

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

101211220012 is a wasteful number, since it uses less digits than its factorization.

101211220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147190 (or 147188 counting only the distinct ones).

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

Adding to 101211220012 its reverse (210022112101), we get a palindrome (311233332113).

The spelling of 101211220012 in words is "one hundred one billion, two hundred eleven million, two hundred twenty thousand, twelve".