102121220201021 has 8 divisors (see below), whose sum is σ = 116712106237824. Its totient is φ = 87530869237680.

The previous prime is 102121220200981. The next prime is 102121220201137. The reversal of 102121220201021 is 120102022121201.

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 102121220201021 - 2¹⁴ = 102121220184637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121220201521) 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, 133359305 + ... + 134122878.

It is an arithmetic number, because the mean of its divisors is an integer number (14589013279728).

Almost surely, 2^{102121220201021} is an apocalyptic number.

It is an amenable number.

102121220201021 is a deficient number, since it is larger than the sum of its proper divisors (14590886036803).

102121220201021 is an equidigital number, since it uses as much as digits as its factorization.

102121220201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267536731.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102121220201021 its reverse (120102022121201), we get a palindrome (222223242322222).

The spelling of 102121220201021 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred one thousand, twenty-one".