2121023220032 has 56 divisors (see below), whose sum is σ = 4373836108800. Its totient is φ = 1019413486080.

The previous prime is 2121023219977. The next prime is 2121023220047. The reversal of 2121023220032 is 2300223201212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121023219986 and 2121023220013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3291848 + ... + 3883079.

Almost surely, 2^{2121023220032} is an apocalyptic number.

It is an amenable number.

2121023220032 is an abundant number, since it is smaller than the sum of its proper divisors (2252812888768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121023220032 is a wasteful number, since it uses less digits than its factorization.

2121023220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7175119 (or 7175109 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2121023220032 its reverse (2300223201212), we get a palindrome (4421246421244).

The spelling of 2121023220032 in words is "two trillion, one hundred twenty-one billion, twenty-three million, two hundred twenty thousand, thirty-two".