221202000212 has 6 divisors (see below), whose sum is σ = 387103500378. Its totient is φ = 110601000104.

The previous prime is 221202000193. The next prime is 221202000223. The reversal of 221202000212 is 212000202122.

It can be written as a sum of positive squares in only one way, i.e., 220896240016 + 305760196 = 469996^2 + 17486^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27650250023 + ... + 27650250030.

It is an arithmetic number, because the mean of its divisors is an integer number (64517250063).

Almost surely, 2^221202000212 is an apocalyptic number.

It is an amenable number.

221202000212 is a deficient number, since it is larger than the sum of its proper divisors (165901500166).

221202000212 is a wasteful number, since it uses less digits than its factorization.

221202000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55300500057 (or 55300500055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221202000212 its reverse (212000202122), we get a palindrome (433202202334).

The spelling of 221202000212 in words is "two hundred twenty-one billion, two hundred two million, two hundred twelve", and thus it is an aban number.