102102022021121 has 8 divisors (see below), whose sum is σ = 102753720547944. Its totient is φ = 101450340800640.

The previous prime is 102102022021117. The next prime is 102102022021127. The reversal of 102102022021121 is 121120220201201.

It can be written as a sum of positive squares in 4 ways, for example, as 40018086220225 + 62083935800896 = 6325985^2 + 7879336^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 102102022021121 - 2² = 102102022021117 is a prime.

It is a super-2 number, since 2×102102022021121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102102022021121.

It is not an unprimeable number, because it can be changed into a prime (102102022021127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7615301 + ... + 16192493.

It is an arithmetic number, because the mean of its divisors is an integer number (12844215068493).

Almost surely, 2^{102102022021121} is an apocalyptic number.

It is an amenable number.

102102022021121 is a deficient number, since it is larger than the sum of its proper divisors (651698526823).

102102022021121 is an equidigital number, since it uses as much as digits as its factorization.

102102022021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8653171.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102102022021121 its reverse (121120220201201), we get a palindrome (223222242222322).

The spelling of 102102022021121 in words is "one hundred two trillion, one hundred two billion, twenty-two million, twenty-one thousand, one hundred twenty-one".