102121100200221 has 8 divisors (see below), whose sum is σ = 136180926939744. Its totient is φ = 68071003463760.

The previous prime is 102121100200157. The next prime is 102121100200307. The reversal of 102121100200221 is 122002001121201.

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

It is not a de Polignac number, because 102121100200221 - 2⁶ = 102121100200157 is a prime.

It is a super-2 number, since 2×102121100200221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102121100200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121100000221) 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, 2432476275 + ... + 2432518256.

It is an arithmetic number, because the mean of its divisors is an integer number (17022615867468).

Almost surely, 2^{102121100200221} is an apocalyptic number.

It is an amenable number.

102121100200221 is a deficient number, since it is larger than the sum of its proper divisors (34059826739523).

102121100200221 is an equidigital number, since it uses as much as digits as its factorization.

102121100200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865001531.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102121100200221 its reverse (122002001121201), we get a palindrome (224123101321422).

The spelling of 102121100200221 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred million, two hundred thousand, two hundred twenty-one".