102201101120121 has 16 divisors (see below), whose sum is σ = 137263878872064. Its totient is φ = 67636203261824.

The previous prime is 102201101120099. The next prime is 102201101120123. The reversal of 102201101120121 is 121021101102201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102201101120121 - 2¹³ = 102201101111929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102201101120121.

It is not an unprimeable number, because it can be changed into a prime (102201101120123) 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, 54874435 + ... + 56706311.

It is an arithmetic number, because the mean of its divisors is an integer number (8578992429504).

Almost surely, 2^{102201101120121} is an apocalyptic number.

It is an amenable number.

102201101120121 is a deficient number, since it is larger than the sum of its proper divisors (35062777751943).

102201101120121 is a wasteful number, since it uses less digits than its factorization.

102201101120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967760.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102201101120121 its reverse (121021101102201), we get a palindrome (223222202222322).

The spelling of 102201101120121 in words is "one hundred two trillion, two hundred one billion, one hundred one million, one hundred twenty thousand, one hundred twenty-one".