102220220201021 has 8 divisors (see below), whose sum is σ = 110095053909624. Its totient is φ = 94347063613440.

The previous prime is 102220220200957. The next prime is 102220220201039. The reversal of 102220220201021 is 120102022022201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 153753388996 + 102066466812025 = 392114^2 + 10102795^2 .

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 102220220201021 - 2⁶ = 102220220200957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220220201521) 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, 419153660 + ... + 419397461.

It is an arithmetic number, because the mean of its divisors is an integer number (13761881738703).

Almost surely, 2^{102220220201021} is an apocalyptic number.

It is an amenable number.

102220220201021 is a deficient number, since it is larger than the sum of its proper divisors (7874833708603).

102220220201021 is an equidigital number, since it uses as much as digits as its factorization.

102220220201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838560511.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102220220201021 its reverse (120102022022201), we get a palindrome (222322242223222).

The spelling of 102220220201021 in words is "one hundred two trillion, two hundred twenty billion, two hundred twenty million, two hundred one thousand, twenty-one".