122012121 has 16 divisors (see below), whose sum is σ = 202825728. Its totient is φ = 63382800.

The previous prime is 122012119. The next prime is 122012123. The reversal of 122012121 is 121210221.

It is an interprime number because it is at equal distance from previous prime (122012119) and next prime (122012123).

It is not a de Polignac number, because 122012121 - 2¹ = 122012119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122012097 and 122012106.

It is not an unprimeable number, because it can be changed into a prime (122012123) 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, 263865 + ... + 264326.

It is an arithmetic number, because the mean of its divisors is an integer number (12676608).

Almost surely, 2^122012121 is an apocalyptic number.

122012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122012121 is a deficient number, since it is larger than the sum of its proper divisors (80813607).

122012121 is a wasteful number, since it uses less digits than its factorization.

122012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528212.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 122012121 is about 11045.9096954484. The cubic root of 122012121 is about 495.9839910394.

Adding to 122012121 its reverse (121210221), we get a palindrome (243222342).

The spelling of 122012121 in words is "one hundred twenty-two million, twelve thousand, one hundred twenty-one".