221020022001202 has 4 divisors (see below), whose sum is σ = 331530033001806. Its totient is φ = 110510011000600.

The previous prime is 221020022001173. The next prime is 221020022001257. The reversal of 221020022001202 is 202100220020122.

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., 175150163893761 + 45869858107441 = 13234431^2 + 6772729^2 .

It is a super-2 number, since 2×221020022001202² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55255005500299 + ... + 55255005500302.

Almost surely, 2^{221020022001202} is an apocalyptic number.

221020022001202 is a deficient number, since it is larger than the sum of its proper divisors (110510011000604).

221020022001202 is a wasteful number, since it uses less digits than its factorization.

221020022001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110510011000603.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221020022001202 its reverse (202100220020122), we get a palindrome (423120242021324).

The spelling of 221020022001202 in words is "two hundred twenty-one trillion, twenty billion, twenty-two million, one thousand, two hundred two".