102201111001021 has 64 divisors (see below), whose sum is σ = 113192548761600. Its totient is φ = 91909819238400.

The previous prime is 102201111001019. The next prime is 102201111001061. The reversal of 102201111001021 is 120100111102201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102201111001021 - 2¹ = 102201111001019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102201111000992 and 102201111001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201111001061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12523107181 + ... + 12523115341.

It is an arithmetic number, because the mean of its divisors is an integer number (1768633574400).

Almost surely, 2^{102201111001021} is an apocalyptic number.

It is an amenable number.

102201111001021 is a deficient number, since it is larger than the sum of its proper divisors (10991437760579).

102201111001021 is a wasteful number, since it uses less digits than its factorization.

102201111001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102201111001021 its reverse (120100111102201), we get a palindrome (222301222103222).

The spelling of 102201111001021 in words is "one hundred two trillion, two hundred one billion, one hundred eleven million, one thousand, twenty-one".