121022012121 has 16 divisors (see below), whose sum is σ = 163201521600. Its totient is φ = 79762208768.

The previous prime is 121022012093. The next prime is 121022012179. The reversal of 121022012121 is 121210220121.

It is a cyclic number.

It is not a de Polignac number, because 121022012121 - 2¹³ = 121022003929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121022012121.

It is not an unprimeable number, because it can be changed into a prime (121022012021) 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, 1841785 + ... + 1906361.

It is an arithmetic number, because the mean of its divisors is an integer number (10200095100).

Almost surely, 2^121022012121 is an apocalyptic number.

It is an amenable number.

121022012121 is a deficient number, since it is larger than the sum of its proper divisors (42179509479).

121022012121 is an equidigital number, since it uses as much as digits as its factorization.

121022012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71688.

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

Adding to 121022012121 its reverse (121210220121), we get a palindrome (242232232242).

The spelling of 121022012121 in words is "one hundred twenty-one billion, twenty-two million, twelve thousand, one hundred twenty-one".