20101120312 has 32 divisors (see below), whose sum is σ = 46387202400. Its totient is φ = 7952091264.

The previous prime is 20101120301. The next prime is 20101120321. The reversal of 20101120312 is 21302110102.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20101120292 and 20101120301.

It is a congruent number.

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, 13804987 + ... + 13806442.

It is an arithmetic number, because the mean of its divisors is an integer number (1449600075).

Almost surely, 2^20101120312 is an apocalyptic number.

It is an amenable number.

20101120312 is an abundant number, since it is smaller than the sum of its proper divisors (26286082088).

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

20101120312 is a wasteful number, since it uses less digits than its factorization.

20101120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27611455 (or 27611451 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20101120312 its reverse (21302110102), we get a palindrome (41403230414).

The spelling of 20101120312 in words is "twenty billion, one hundred one million, one hundred twenty thousand, three hundred twelve".