1221022102051 has 2 divisors, whose sum is σ = 1221022102052. Its totient is φ = 1221022102050.

The previous prime is 1221022102019. The next prime is 1221022102073. The reversal of 1221022102051 is 1502012201221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221022102051 - 2⁵ = 1221022102019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221022702051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610511051025 + 610511051026.

It is an arithmetic number, because the mean of its divisors is an integer number (610511051026).

Almost surely, 2^{1221022102051} is an apocalyptic number.

1221022102051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221022102051 is an equidigital number, since it uses as much as digits as its factorization.

1221022102051 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 1221022102051 its reverse (1502012201221), we get a palindrome (2723034303272).

The spelling of 1221022102051 in words is "one trillion, two hundred twenty-one billion, twenty-two million, one hundred two thousand, fifty-one".