122101212212021 has 4 divisors (see below), whose sum is σ = 139544242528032. Its totient is φ = 104658181896012.

The previous prime is 122101212211973. The next prime is 122101212212113. The reversal of 122101212212021 is 120212212101221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122101212212021 - 2²² = 122101208017717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122101212211984 and 122101212212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101212211021) 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, 8721515157995 + ... + 8721515158008.

It is an arithmetic number, because the mean of its divisors is an integer number (34886060632008).

Almost surely, 2^{122101212212021} is an apocalyptic number.

It is an amenable number.

122101212212021 is a deficient number, since it is larger than the sum of its proper divisors (17443030316011).

122101212212021 is an equidigital number, since it uses as much as digits as its factorization.

122101212212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17443030316010.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122101212212021 its reverse (120212212101221), we get a palindrome (242313424313242).

The spelling of 122101212212021 in words is "one hundred twenty-two trillion, one hundred one billion, two hundred twelve million, two hundred twelve thousand, twenty-one".