20101001211012 has 24 divisors (see below), whose sum is σ = 46906249261536. Its totient is φ = 6699774722368.

The previous prime is 20101001210957. The next prime is 20101001211041. The reversal of 20101001211012 is 21011210010102.

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, 69726993 + ... + 70014680.

It is an arithmetic number, because the mean of its divisors is an integer number (1954427052564).

Almost surely, 2^{20101001211012} is an apocalyptic number.

It is an amenable number.

20101001211012 is an abundant number, since it is smaller than the sum of its proper divisors (26805248050524).

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

20101001211012 is a wasteful number, since it uses less digits than its factorization.

20101001211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139753667 (or 139753665 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20101001211012 its reverse (21011210010102), we get a palindrome (41112211221114).

The spelling of 20101001211012 in words is "twenty trillion, one hundred one billion, one million, two hundred eleven thousand, twelve".