101020120012021 has 16 divisors (see below), whose sum is σ = 116005427740800. Its totient is φ = 86173601963328.

The previous prime is 101020120011959. The next prime is 101020120012051. The reversal of 101020120012021 is 120210021020101.

It is a cyclic number.

It is not a de Polignac number, because 101020120012021 - 2⁴⁵ = 65835747923189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101020120011992 and 101020120012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020120012051) 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, 9766291 + ... + 17245888.

It is an arithmetic number, because the mean of its divisors is an integer number (7250339233800).

Almost surely, 2^{101020120012021} is an apocalyptic number.

It is an amenable number.

101020120012021 is a deficient number, since it is larger than the sum of its proper divisors (14985307728779).

101020120012021 is a wasteful number, since it uses less digits than its factorization.

101020120012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27014748.

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

Adding to 101020120012021 its reverse (120210021020101), we get a palindrome (221230141032122).

The spelling of 101020120012021 in words is "one hundred one trillion, twenty billion, one hundred twenty million, twelve thousand, twenty-one".