122121021021 has 16 divisors (see below), whose sum is σ = 171669603840. Its totient is φ = 77006810160.

The previous prime is 122121021019. The next prime is 122121021023. The reversal of 122121021021 is 120120121221.

It is an interprime number because it is at equal distance from previous prime (122121021019) and next prime (122121021023).

It is not a de Polignac number, because 122121021021 - 2¹ = 122121021019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121021023) 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, 1661715 + ... + 1733648.

It is an arithmetic number, because the mean of its divisors is an integer number (10729350240).

Almost surely, 2^122121021021 is an apocalyptic number.

It is an amenable number.

122121021021 is a deficient number, since it is larger than the sum of its proper divisors (49548582819).

122121021021 is a wasteful number, since it uses less digits than its factorization.

122121021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396016.

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

Adding to 122121021021 its reverse (120120121221), we get a palindrome (242241142242).

The spelling of 122121021021 in words is "one hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, twenty-one".