122121302121 has 48 divisors (see below), whose sum is σ = 222972282624. Its totient is φ = 62674653312.

The previous prime is 122121302101. The next prime is 122121302123. The reversal of 122121302121 is 121203121221.

122121302121 is a `hidden beast` number, since 1 + 221 + 21 + 302 + 121 = 666.

It is not a de Polignac number, because 122121302121 - 2¹¹ = 122121300073 is a prime.

It is a super-2 number, since 2×122121302121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122121302094 and 122121302103.

It is not an unprimeable number, because it can be changed into a prime (122121302123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1984701 + ... + 2045306.

It is an arithmetic number, because the mean of its divisors is an integer number (4645255888).

Almost surely, 2^122121302121 is an apocalyptic number.

It is an amenable number.

122121302121 is a deficient number, since it is larger than the sum of its proper divisors (100850980503).

122121302121 is a wasteful number, since it uses less digits than its factorization.

122121302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030070 (or 4030067 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 122121302121 its reverse (121203121221), we get a palindrome (243324423342).

The spelling of 122121302121 in words is "one hundred twenty-two billion, one hundred twenty-one million, three hundred two thousand, one hundred twenty-one".