2002011220051 has 2 divisors, whose sum is σ = 2002011220052. Its totient is φ = 2002011220050.

The previous prime is 2002011219953. The next prime is 2002011220057. The reversal of 2002011220051 is 1500221102002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2002011220051 - 2⁹ = 2002011219539 is a prime.

It is not a weakly prime, because it can be changed into another prime (2002011220057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001005610025 + 1001005610026.

It is an arithmetic number, because the mean of its divisors is an integer number (1001005610026).

Almost surely, 2^{2002011220051} is an apocalyptic number.

2002011220051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002011220051 is an equidigital number, since it uses as much as digits as its factorization.

2002011220051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 2002011220051 its reverse (1500221102002), we get a palindrome (3502232322053).

The spelling of 2002011220051 in words is "two trillion, two billion, eleven million, two hundred twenty thousand, fifty-one".