20121101012 has 12 divisors (see below), whose sum is σ = 35231382816. Its totient is φ = 10054991640.

The previous prime is 20121100991. The next prime is 20121101027. The reversal of 20121101012 is 21010112102.

It is a junction number, because it is equal to n+sod(n) for n = 20121100984 and 20121101002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381568 + ... + 1396055.

It is an arithmetic number, because the mean of its divisors is an integer number (2935948568).

Almost surely, 2^20121101012 is an apocalyptic number.

It is an amenable number.

20121101012 is a deficient number, since it is larger than the sum of its proper divisors (15110281804).

20121101012 is a wasteful number, since it uses less digits than its factorization.

20121101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779438 (or 2779436 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20121101012 its reverse (21010112102), we get a palindrome (41131213114).

The spelling of 20121101012 in words is "twenty billion, one hundred twenty-one million, one hundred one thousand, twelve".