2101220021012 has 48 divisors (see below), whose sum is σ = 4307187679872. Its totient is φ = 878145287040.

The previous prime is 2101220020957. The next prime is 2101220021023. The reversal of 2101220021012 is 2101200221012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685439 + ... + 2161542.

It is an arithmetic number, because the mean of its divisors is an integer number (89733076664).

Almost surely, 2^{2101220021012} is an apocalyptic number.

It is an amenable number.

2101220021012 is an abundant number, since it is smaller than the sum of its proper divisors (2205967658860).

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

2101220021012 is a wasteful number, since it uses less digits than its factorization.

2101220021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847648 (or 2847646 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2101220021012 its reverse (2101200221012), we get a palindrome (4202420242024).

The spelling of 2101220021012 in words is "two trillion, one hundred one billion, two hundred twenty million, twenty-one thousand, twelve".