221012220112202 has 4 divisors (see below), whose sum is σ = 331518330168306. Its totient is φ = 110506110056100.

The previous prime is 221012220112199. The next prime is 221012220112219. The reversal of 221012220112202 is 202211022210122.

221012220112202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 208672730269081 + 12339489843121 = 14445509^2 + 3512761^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55253055028049 + ... + 55253055028052.

Almost surely, 2^{221012220112202} is an apocalyptic number.

221012220112202 is a deficient number, since it is larger than the sum of its proper divisors (110506110056104).

221012220112202 is a wasteful number, since it uses less digits than its factorization.

221012220112202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110506110056103.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221012220112202 its reverse (202211022210122), we get a palindrome (423223242322324).

The spelling of 221012220112202 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty million, one hundred twelve thousand, two hundred two".