1022120121 has 32 divisors (see below), whose sum is σ = 1576879488. Its totient is φ = 582026240.

The previous prime is 1022120117. The next prime is 1022120123. The reversal of 1022120121 is 1210212201.

It is a cyclic number.

It is not a de Polignac number, because 1022120121 - 2² = 1022120117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022120097 and 1022120106.

It is not an unprimeable number, because it can be changed into a prime (1022120123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432475 + ... + 434831.

It is an arithmetic number, because the mean of its divisors is an integer number (49277484).

Almost surely, 2^1022120121 is an apocalyptic number.

1022120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022120121 is a deficient number, since it is larger than the sum of its proper divisors (554759367).

1022120121 is a wasteful number, since it uses less digits than its factorization.

1022120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161.

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

The square root of 1022120121 is about 31970.6133973060. The cubic root of 1022120121 is about 1007.3196654414.

Adding to 1022120121 its reverse (1210212201), we get a palindrome (2232332322).

The spelling of 1022120121 in words is "one billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".