20299121010 has 192 divisors, whose sum is σ = 65682489600. Its totient is φ = 4243954176.

The previous prime is 20299120993. The next prime is 20299121027. The reversal of 20299121010 is 1012199202.

It is an interprime number because it is at equal distance from previous prime (20299120993) and next prime (20299121027).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 317892 + ... + 376368.

It is an arithmetic number, because the mean of its divisors is an integer number (342096300).

Almost surely, 2^20299121010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20299121010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32841244800).

20299121010 is an abundant number, since it is smaller than the sum of its proper divisors (45383368590).

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

20299121010 is a wasteful number, since it uses less digits than its factorization.

20299121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58545 (or 58542 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 20299121010 in words is "twenty billion, two hundred ninety-nine million, one hundred twenty-one thousand, ten".