10122020400 has 120 divisors (see below), whose sum is σ = 32606038080. Its totient is φ = 2684069120.

The previous prime is 10122020387. The next prime is 10122020417. The reversal of 10122020400 is 402022101.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191239 + ... + 238361.

It is an arithmetic number, because the mean of its divisors is an integer number (271716984).

Almost surely, 2^10122020400 is an apocalyptic number.

10122020400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10122020400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16303019040).

10122020400 is an abundant number, since it is smaller than the sum of its proper divisors (22484017680).

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

10122020400 is a wasteful number, since it uses less digits than its factorization.

10122020400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47323 (or 47312 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 10122020400 its reverse (402022101), we get a palindrome (10524042501).

The spelling of 10122020400 in words is "ten billion, one hundred twenty-two million, twenty thousand, four hundred".