2101221210212 has 12 divisors (see below), whose sum is σ = 3677149222320. Its totient is φ = 1050607146696.

The previous prime is 2101221210149. The next prime is 2101221210227. The reversal of 2101221210212 is 2120121221012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904739 + ... + 2240757.

It is an arithmetic number, because the mean of its divisors is an integer number (306429101860).

Almost surely, 2^{2101221210212} is an apocalyptic number.

It is an amenable number.

2101221210212 is a deficient number, since it is larger than the sum of its proper divisors (1575928012108).

2101221210212 is a wasteful number, since it uses less digits than its factorization.

2101221210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729210 (or 1729208 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2101221210212 its reverse (2120121221012), we get a palindrome (4221342431224).

The spelling of 2101221210212 in words is "two trillion, one hundred one billion, two hundred twenty-one million, two hundred ten thousand, two hundred twelve".