21221201001202 has 32 divisors (see below), whose sum is σ = 32947705929600. Its totient is φ = 10244125296000.

The previous prime is 21221201001191. The next prime is 21221201001227. The reversal of 21221201001202 is 20210010212212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15742699 + ... + 17037457.

It is an arithmetic number, because the mean of its divisors is an integer number (1029615810300).

Almost surely, 2^{21221201001202} is an apocalyptic number.

21221201001202 is a deficient number, since it is larger than the sum of its proper divisors (11726504928398).

21221201001202 is a wasteful number, since it uses less digits than its factorization.

21221201001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296882.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21221201001202 its reverse (20210010212212), we get a palindrome (41431211213414).

The spelling of 21221201001202 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred one million, one thousand, two hundred two".