1222020411651 has 12 divisors (see below), whose sum is σ = 1900920640528. Its totient is φ = 752012560944.

The previous prime is 1222020411643. The next prime is 1222020411673. The reversal of 1222020411651 is 1561140202221.

It is a happy number.

1222020411651 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 0 + 2 + 0 + 4 + 1 + 1 + 651 = 666.

It is not a de Polignac number, because 1222020411651 - 2³ = 1222020411643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222020411151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5222309335 + ... + 5222309568.

Almost surely, 2^{1222020411651} is an apocalyptic number.

1222020411651 is a deficient number, since it is larger than the sum of its proper divisors (678900228877).

1222020411651 is a wasteful number, since it uses less digits than its factorization.

1222020411651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10444618922 (or 10444618919 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 1222020411651 its reverse (1561140202221), we get a palindrome (2783160613872).

The spelling of 1222020411651 in words is "one trillion, two hundred twenty-two billion, twenty million, four hundred eleven thousand, six hundred fifty-one".