102101221201021 has 8 divisors (see below), whose sum is σ = 117201150077760. Its totient is φ = 87129802357728.

The previous prime is 102101221201009. The next prime is 102101221201043. The reversal of 102101221201021 is 120102122101201.

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 102101221201021 - 2¹⁵ = 102101221168253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102101221200986 and 102101221201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101221201061) 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, 32127506656 + ... + 32127509833.

It is an arithmetic number, because the mean of its divisors is an integer number (14650143759720).

Almost surely, 2^{102101221201021} is an apocalyptic number.

It is an amenable number.

102101221201021 is a deficient number, since it is larger than the sum of its proper divisors (15099928876739).

102101221201021 is an equidigital number, since it uses as much as digits as its factorization.

102101221201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64255016723.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102101221201021 its reverse (120102122101201), we get a palindrome (222203343302222).

It can be divided in two parts, 102101 and 221201021, that added together give a palindrome (221303122).

The spelling of 102101221201021 in words is "one hundred two trillion, one hundred one billion, two hundred twenty-one million, two hundred one thousand, twenty-one".