202121004000 has 96 divisors (see below), whose sum is σ = 662148448416. Its totient is φ = 53898931200.

The previous prime is 202121003899. The next prime is 202121004031. The reversal of 202121004000 is 400121202.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8409709 + ... + 8433708.

It is an arithmetic number, because the mean of its divisors is an integer number (6897379671).

Almost surely, 2^202121004000 is an apocalyptic number.

202121004000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202121004000 is an abundant number, since it is smaller than the sum of its proper divisors (460027444416).

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

202121004000 is a wasteful number, since it uses less digits than its factorization.

202121004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843445 (or 16843427 counting only the distinct ones).

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

Adding to 202121004000 its reverse (400121202), we get a palindrome (202521125202).

The spelling of 202121004000 in words is "two hundred two billion, one hundred twenty-one million, four thousand".