21202212001202 has 4 divisors (see below), whose sum is σ = 31803318001806. Its totient is φ = 10601106000600.

The previous prime is 21202212001153. The next prime is 21202212001211. The reversal of 21202212001202 is 20210021220212.

It is a happy number.

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., 19860133773841 + 1342078227361 = 4456471^2 + 1158481^2 .

It is a super-3 number, since 3×21202212001202³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300553000299 + ... + 5300553000302.

Almost surely, 2^{21202212001202} is an apocalyptic number.

21202212001202 is a deficient number, since it is larger than the sum of its proper divisors (10601106000604).

21202212001202 is a wasteful number, since it uses less digits than its factorization.

21202212001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10601106000603.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21202212001202 its reverse (20210021220212), we get a palindrome (41412233221414).

The spelling of 21202212001202 in words is "twenty-one trillion, two hundred two billion, two hundred twelve million, one thousand, two hundred two".