2102021210072 has 32 divisors (see below), whose sum is σ = 4626069849120. Its totient is φ = 876518496000.

The previous prime is 2102021210071. The next prime is 2102021210129. The reversal of 2102021210072 is 2700121202012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102021210071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507242429 + ... + 507246572.

It is an arithmetic number, because the mean of its divisors is an integer number (144564682785).

Almost surely, 2^{2102021210072} is an apocalyptic number.

It is an amenable number.

2102021210072 is an abundant number, since it is smaller than the sum of its proper divisors (2524048639048).

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

2102021210072 is a wasteful number, since it uses less digits than its factorization.

2102021210072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014489051 (or 1014489047 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 2102021210072 its reverse (2700121202012), we get a palindrome (4802142412084).

The spelling of 2102021210072 in words is "two trillion, one hundred two billion, twenty-one million, two hundred ten thousand, seventy-two".