100121020012021 has 16 divisors (see below), whose sum is σ = 106037823513600. Its totient is φ = 94207256091648.

The previous prime is 100121020012003. The next prime is 100121020012049. The reversal of 100121020012021 is 120210020121001.

It is a cyclic number.

It is not a de Polignac number, because 100121020012021 - 2¹⁷ = 100121019880949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121020011992 and 100121020012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121020012001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1611108076 + ... + 1611170218.

It is an arithmetic number, because the mean of its divisors is an integer number (6627363969600).

Almost surely, 2^{100121020012021} is an apocalyptic number.

It is an amenable number.

100121020012021 is a deficient number, since it is larger than the sum of its proper divisors (5916803501579).

100121020012021 is a wasteful number, since it uses less digits than its factorization.

100121020012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85068.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100121020012021 its reverse (120210020121001), we get a palindrome (220331040133022).

The spelling of 100121020012021 in words is "one hundred trillion, one hundred twenty-one billion, twenty million, twelve thousand, twenty-one".