201002120210021 has 32 divisors (see below), whose sum is σ = 236479326370560. Its totient is φ = 169289167348224.

The previous prime is 201002120209991. The next prime is 201002120210039. The reversal of 201002120210021 is 120012021200102.

It is a cyclic number.

It is not a de Polignac number, because 201002120210021 - 2³⁰ = 201001046468197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201002120209978 and 201002120210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002120210041) 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, 138924656 + ... + 140364041.

It is an arithmetic number, because the mean of its divisors is an integer number (7389978949080).

Almost surely, 2^{201002120210021} is an apocalyptic number.

It is an amenable number.

201002120210021 is a deficient number, since it is larger than the sum of its proper divisors (35477206160539).

201002120210021 is a wasteful number, since it uses less digits than its factorization.

201002120210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279288845.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201002120210021 its reverse (120012021200102), we get a palindrome (321014141410123).

The spelling of 201002120210021 in words is "two hundred one trillion, two billion, one hundred twenty million, two hundred ten thousand, twenty-one".