402021322043100 has 144 divisors (see below), whose sum is σ = 1195274398875648. Its totient is φ = 104251011759360.

The previous prime is 402021322043057. The next prime is 402021322043129. The reversal of 402021322043100 is 1340223120204.

It is a happy number.

It is a super-2 number, since 2×402021322043100² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10301637 + ... + 30168963.

Almost surely, 2^{402021322043100} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402021322043100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597637199437824).

402021322043100 is an abundant number, since it is smaller than the sum of its proper divisors (793253076832548).

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

402021322043100 is a wasteful number, since it uses less digits than its factorization.

402021322043100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19869204 (or 19869197 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 402021322043100 its reverse (1340223120204), we get a palindrome (403361545163304).

The spelling of 402021322043100 in words is "four hundred two trillion, twenty-one billion, three hundred twenty-two million, forty-three thousand, one hundred".