20401123302 has 24 divisors (see below), whose sum is σ = 50517067536. Its totient is φ = 5828892336.

The previous prime is 20401123247. The next prime is 20401123331. The reversal of 20401123302 is 20332110402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80956713 + ... + 80956964.

It is an arithmetic number, because the mean of its divisors is an integer number (2104877814).

Almost surely, 2^20401123302 is an apocalyptic number.

20401123302 is an abundant number, since it is smaller than the sum of its proper divisors (30115944234).

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

20401123302 is a wasteful number, since it uses less digits than its factorization.

20401123302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161913692 (or 161913689 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20401123302 its reverse (20332110402), we get a palindrome (40733233704).

The spelling of 20401123302 in words is "twenty billion, four hundred one million, one hundred twenty-three thousand, three hundred two".