2121202210051 has 2 divisors, whose sum is σ = 2121202210052. Its totient is φ = 2121202210050.

The previous prime is 2121202210027. The next prime is 2121202210117. The reversal of 2121202210051 is 1500122021212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121202210051 - 2⁵ = 2121202210019 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121202214051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060601105025 + 1060601105026.

It is an arithmetic number, because the mean of its divisors is an integer number (1060601105026).

Almost surely, 2^{2121202210051} is an apocalyptic number.

2121202210051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121202210051 is an equidigital number, since it uses as much as digits as its factorization.

2121202210051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 2121202210051 its reverse (1500122021212), we get a palindrome (3621324231263).

The spelling of 2121202210051 in words is "two trillion, one hundred twenty-one billion, two hundred two million, two hundred ten thousand, fifty-one".