102000120021221 has 32 divisors (see below), whose sum is σ = 106781808646656. Its totient is φ = 97352479224000.

The previous prime is 102000120021199. The next prime is 102000120021263. The reversal of 102000120021221 is 122120021000201.

It is a cyclic number.

It is not a de Polignac number, because 102000120021221 - 2⁶ = 102000120021157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102000120021196 and 102000120021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000120011221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 955173851 + ... + 955280631.

It is an arithmetic number, because the mean of its divisors is an integer number (3336931520208).

Almost surely, 2^{102000120021221} is an apocalyptic number.

It is an amenable number.

102000120021221 is a deficient number, since it is larger than the sum of its proper divisors (4781688625435).

102000120021221 is a wasteful number, since it uses less digits than its factorization.

102000120021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109553.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102000120021221 its reverse (122120021000201), we get a palindrome (224120141021422).

The spelling of 102000120021221 in words is "one hundred two trillion, one hundred twenty million, twenty-one thousand, two hundred twenty-one".