102220120200121 has 32 divisors (see below), whose sum is σ = 128707641824256. Its totient is φ = 78861838680000.

The previous prime is 102220120200059. The next prime is 102220120200127. The reversal of 102220120200121 is 121002021022201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102220120200121 - 2¹⁹ = 102220119675833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102220120200095 and 102220120200104.

It is not an unprimeable number, because it can be changed into a prime (102220120200127) 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, 527891506 + ... + 528085108.

It is an arithmetic number, because the mean of its divisors is an integer number (4022113807008).

Almost surely, 2^{102220120200121} is an apocalyptic number.

102220120200121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102220120200121 is a deficient number, since it is larger than the sum of its proper divisors (26487521624135).

102220120200121 is a wasteful number, since it uses less digits than its factorization.

102220120200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261613.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102220120200121 its reverse (121002021022201), we get a palindrome (223222141222322).

The spelling of 102220120200121 in words is "one hundred two trillion, two hundred twenty billion, one hundred twenty million, two hundred thousand, one hundred twenty-one".