102222021021 has 8 divisors (see below), whose sum is σ = 136308492960. Its totient is φ = 68141781552.

The previous prime is 102222020977. The next prime is 102222021067. The reversal of 102222021021 is 120120222201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-102222021021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222021221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1519711 + ... + 1585548.

It is an arithmetic number, because the mean of its divisors is an integer number (17038561620).

Almost surely, 2^102222021021 is an apocalyptic number.

It is an amenable number.

102222021021 is a deficient number, since it is larger than the sum of its proper divisors (34086471939).

102222021021 is a wasteful number, since it uses less digits than its factorization.

102222021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116235.

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

Adding to 102222021021 its reverse (120120222201), we get a palindrome (222342243222).

The spelling of 102222021021 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, twenty-one".