2100210020501 has 2 divisors, whose sum is σ = 2100210020502. Its totient is φ = 2100210020500.

The previous prime is 2100210020483. The next prime is 2100210020537. The reversal of 2100210020501 is 1050200120012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1128536530276 + 971673490225 = 1062326^2 + 985735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100210020501 - 2³⁴ = 2083030151317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100210020581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050105010250 + 1050105010251.

It is an arithmetic number, because the mean of its divisors is an integer number (1050105010251).

Almost surely, 2^{2100210020501} is an apocalyptic number.

It is an amenable number.

2100210020501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100210020501 is an equidigital number, since it uses as much as digits as its factorization.

2100210020501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 2100210020501 its reverse (1050200120012), we get a palindrome (3150410140513).

The spelling of 2100210020501 in words is "two trillion, one hundred billion, two hundred ten million, twenty thousand, five hundred one".