10001220021202 has 16 divisors (see below), whose sum is σ = 15005456682840. Its totient is φ = 4999401283968.

The previous prime is 10001220021167. The next prime is 10001220021259. The reversal of 10001220021202 is 20212002210001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9470261509641 + 530958511561 = 3077379^2 + 728669^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167581824 + ... + 167641492.

Almost surely, 2^{10001220021202} is an apocalyptic number.

10001220021202 is a deficient number, since it is larger than the sum of its proper divisors (5004236661638).

10001220021202 is a wasteful number, since it uses less digits than its factorization.

10001220021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78525.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10001220021202 its reverse (20212002210001), we get a palindrome (30213222231203).

The spelling of 10001220021202 in words is "ten trillion, one billion, two hundred twenty million, twenty-one thousand, two hundred two".