102022021221021 has 48 divisors (see below), whose sum is σ = 161366792595840. Its totient is φ = 61598925548160.

The previous prime is 102022021221017. The next prime is 102022021221037. The reversal of 102022021221021 is 120122120220201.

It is a happy number.

102022021221021 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 220 + 212 + 210 + 21 = 666.

It is not a de Polignac number, because 102022021221021 - 2² = 102022021221017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102022021220985 and 102022021221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102022021221721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 707593480 + ... + 707737646.

It is an arithmetic number, because the mean of its divisors is an integer number (3361808179080).

Almost surely, 2^{102022021221021} is an apocalyptic number.

102022021221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102022021221021 is a deficient number, since it is larger than the sum of its proper divisors (59344771374819).

102022021221021 is a wasteful number, since it uses less digits than its factorization.

102022021221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171026 (or 171023 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102022021221021 its reverse (120122120220201), we get a palindrome (222144141441222).

The spelling of 102022021221021 in words is "one hundred two trillion, twenty-two billion, twenty-one million, two hundred twenty-one thousand, twenty-one".