121022102021 has 4 divisors (see below), whose sum is σ = 121056574944. Its totient is φ = 120987629100.

The previous prime is 121022101973. The next prime is 121022102053. The reversal of 121022102021 is 120201220121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120201220121 = 23761 ⋅5058761.

It is a cyclic number.

It is not a de Polignac number, because 121022102021 - 2⁶ = 121022101957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121022101987 and 121022102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022152021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17231195 + ... + 17238216.

It is an arithmetic number, because the mean of its divisors is an integer number (30264143736).

Almost surely, 2^121022102021 is an apocalyptic number.

It is an amenable number.

121022102021 is a deficient number, since it is larger than the sum of its proper divisors (34472923).

121022102021 is an equidigital number, since it uses as much as digits as its factorization.

121022102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34472922.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121022102021 its reverse (120201220121), we get a palindrome (241223322142).

The spelling of 121022102021 in words is "one hundred twenty-one billion, twenty-two million, one hundred two thousand, twenty-one".