1226102621 has 16 divisors (see below), whose sum is σ = 1261951488. Its totient is φ = 1190910000.

The previous prime is 1226102609. The next prime is 1226102651. The reversal of 1226102621 is 1262016221.

It is a happy number.

It is not a de Polignac number, because 1226102621 - 2⁶ = 1226102557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226102651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1906526 + ... + 1907168.

It is an arithmetic number, because the mean of its divisors is an integer number (78871968).

Almost surely, 2^1226102621 is an apocalyptic number.

It is an amenable number.

1226102621 is a deficient number, since it is larger than the sum of its proper divisors (35848867).

1226102621 is a wasteful number, since it uses less digits than its factorization.

1226102621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1226102621 is about 35015.7481856378. The cubic root of 1226102621 is about 1070.3084157669.

Adding to 1226102621 its reverse (1262016221), we get a palindrome (2488118842).

The spelling of 1226102621 in words is "one billion, two hundred twenty-six million, one hundred two thousand, six hundred twenty-one".