122101121021 has 4 divisors (see below), whose sum is σ = 133201222944. Its totient is φ = 111001019100.

The previous prime is 122101121017. The next prime is 122101121041. The reversal of 122101121021 is 120121101221.

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: 120121101221 = 11 ⋅10920100111.

It is a cyclic number.

It is not a de Polignac number, because 122101121021 - 2² = 122101121017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122101120987 and 122101121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101121041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5550050945 + ... + 5550050966.

It is an arithmetic number, because the mean of its divisors is an integer number (33300305736).

Almost surely, 2^122101121021 is an apocalyptic number.

122101121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122101121021 is a deficient number, since it is larger than the sum of its proper divisors (11100101923).

122101121021 is a wasteful number, since it uses less digits than its factorization.

122101121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100101922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122101121021 its reverse (120121101221), we get a palindrome (242222222242).

The spelling of 122101121021 in words is "one hundred twenty-two billion, one hundred one million, one hundred twenty-one thousand, twenty-one".