102001022020221 has 4 divisors (see below), whose sum is σ = 136001362693632. Its totient is φ = 68000681346812.

The previous prime is 102001022020169. The next prime is 102001022020237. The reversal of 102001022020221 is 122020220100201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102001022020221 - 2¹¹ = 102001022018173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102001022020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001022020291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17000170336701 + ... + 17000170336706.

It is an arithmetic number, because the mean of its divisors is an integer number (34000340673408).

Almost surely, 2^{102001022020221} is an apocalyptic number.

It is an amenable number.

102001022020221 is a deficient number, since it is larger than the sum of its proper divisors (34000340673411).

102001022020221 is an equidigital number, since it uses as much as digits as its factorization.

102001022020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34000340673410.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102001022020221 its reverse (122020220100201), we get a palindrome (224021242120422).

The spelling of 102001022020221 in words is "one hundred two trillion, one billion, twenty-two million, twenty thousand, two hundred twenty-one".