121010212020021 has 32 divisors (see below), whose sum is σ = 165806546841600. Its totient is φ = 78474750925824.

The previous prime is 121010212019971. The next prime is 121010212020091. The reversal of 121010212020021 is 120020212010121.

It is not a de Polignac number, because 121010212020021 - 2⁹ = 121010212019509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010212020091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33534780 + ... + 36967578.

It is an arithmetic number, because the mean of its divisors is an integer number (5181454588800).

Almost surely, 2^{121010212020021} is an apocalyptic number.

It is an amenable number.

121010212020021 is a deficient number, since it is larger than the sum of its proper divisors (44796334821579).

121010212020021 is a wasteful number, since it uses less digits than its factorization.

121010212020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435065.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121010212020021 its reverse (120020212010121), we get a palindrome (241030424030142).

The spelling of 121010212020021 in words is "one hundred twenty-one trillion, ten billion, two hundred twelve million, twenty thousand, twenty-one".