2121011021104 has 160 divisors (see below), whose sum is σ = 4337150976000. Its totient is φ = 1003800314880.

The previous prime is 2121011021093. The next prime is 2121011021113. The reversal of 2121011021104 is 4011201101212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1128796837 + ... + 1128798715.

It is an arithmetic number, because the mean of its divisors is an integer number (27107193600).

Almost surely, 2^{2121011021104} is an apocalyptic number.

It is an amenable number.

2121011021104 is an abundant number, since it is smaller than the sum of its proper divisors (2216139954896).

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

2121011021104 is a wasteful number, since it uses less digits than its factorization.

2121011021104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2325 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121011021104 its reverse (4011201101212), we get a palindrome (6132212122316).

The spelling of 2121011021104 in words is "two trillion, one hundred twenty-one billion, eleven million, twenty-one thousand, one hundred four".