210002120400028 has 96 divisors (see below), whose sum is σ = 443469090613248. Its totient is φ = 85894899763200.

The previous prime is 210002120399987. The next prime is 210002120400029. The reversal of 210002120400028 is 820004021200012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 210002120399981 and 210002120400008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002120400029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52632625 + ... + 56481832.

It is an arithmetic number, because the mean of its divisors is an integer number (4619469693888).

Almost surely, 2^{210002120400028} is an apocalyptic number.

It is an amenable number.

210002120400028 is an abundant number, since it is smaller than the sum of its proper divisors (233466970213220).

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

210002120400028 is a wasteful number, since it uses less digits than its factorization.

210002120400028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109114603 (or 109114601 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 210002120400028 in words is "two hundred ten trillion, two billion, one hundred twenty million, four hundred thousand, twenty-eight".