2021121110102 has 32 divisors (see below), whose sum is σ = 3244148278272. Its totient is φ = 942077150784.

The previous prime is 2021121110101. The next prime is 2021121110131. The reversal of 2021121110102 is 2010111211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021121110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213998 + ... + 2021889.

It is an arithmetic number, because the mean of its divisors is an integer number (101379633696).

Almost surely, 2^{2021121110102} is an apocalyptic number.

2021121110102 is a deficient number, since it is larger than the sum of its proper divisors (1223027168170).

2021121110102 is a wasteful number, since it uses less digits than its factorization.

2021121110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236412.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2021121110102 its reverse (2010111211202), we get a palindrome (4031232321304).

The spelling of 2021121110102 in words is "two trillion, twenty-one billion, one hundred twenty-one million, one hundred ten thousand, one hundred two".