202021020121102 has 16 divisors (see below), whose sum is σ = 372961883300832. Its totient is φ = 79920403564320.

The previous prime is 202021020121091. The next prime is 202021020121187. The reversal of 202021020121102 is 201121020120202.

It is a happy number.

It is a congruent number.

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, 555002802349 + ... + 555002802712.

It is an arithmetic number, because the mean of its divisors is an integer number (23310117706302).

Almost surely, 2^{202021020121102} is an apocalyptic number.

202021020121102 is a deficient number, since it is larger than the sum of its proper divisors (170940863179730).

202021020121102 is a wasteful number, since it uses less digits than its factorization.

202021020121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110005605083.

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

Adding to 202021020121102 its reverse (201121020120202), we get a palindrome (403142040241304).

The spelling of 202021020121102 in words is "two hundred two trillion, twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred two".