2121636264446 has 16 divisors (see below), whose sum is σ = 3183618171888. Its totient is φ = 1060430280000.

The previous prime is 2121636264437. The next prime is 2121636264491. The reversal of 2121636264446 is 6444626361212.

It is a super-2 number, since 2×2121636264446² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121636264446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113005916 + ... + 113024688.

It is an arithmetic number, because the mean of its divisors is an integer number (198976135743).

Almost surely, 2^{2121636264446} is an apocalyptic number.

2121636264446 is a deficient number, since it is larger than the sum of its proper divisors (1061981907442).

2121636264446 is a wasteful number, since it uses less digits than its factorization.

2121636264446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36427.

The product of its digits is 1990656, while the sum is 47.

The spelling of 2121636264446 in words is "two trillion, one hundred twenty-one billion, six hundred thirty-six million, two hundred sixty-four thousand, four hundred forty-six".