121210122021 has 8 divisors (see below), whose sum is σ = 165371949600. Its totient is φ = 78927521232.

The previous prime is 121210122001. The next prime is 121210122067. The reversal of 121210122021 is 120221012121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121210122021 - 2¹¹ = 121210119973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210122001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469806546 + ... + 469806803.

It is an arithmetic number, because the mean of its divisors is an integer number (20671493700).

Almost surely, 2^121210122021 is an apocalyptic number.

It is an amenable number.

121210122021 is a deficient number, since it is larger than the sum of its proper divisors (44161827579).

121210122021 is an equidigital number, since it uses as much as digits as its factorization.

121210122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939613395.

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

Adding to 121210122021 its reverse (120221012121), we get a palindrome (241431134142).

The spelling of 121210122021 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, twenty-one".