10121025020 has 12 divisors (see below), whose sum is σ = 21254152584. Its totient is φ = 4048410000.

The previous prime is 10121025017. The next prime is 10121025053. The reversal of 10121025020 is 2052012101.

It is a junction number, because it is equal to n+sod(n) for n = 10121024986 and 10121025004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253025606 + ... + 253025645.

It is an arithmetic number, because the mean of its divisors is an integer number (1771179382).

Almost surely, 2^10121025020 is an apocalyptic number.

10121025020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121025020 is an abundant number, since it is smaller than the sum of its proper divisors (11133127564).

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

10121025020 is a wasteful number, since it uses less digits than its factorization.

10121025020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506051260 (or 506051258 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 10121025020 its reverse (2052012101), we get a palindrome (12173037121).

The spelling of 10121025020 in words is "ten billion, one hundred twenty-one million, twenty-five thousand, twenty".