102101222021 has 16 divisors (see below), whose sum is σ = 104195476224. Its totient is φ = 100026670464.

The previous prime is 102101221991. The next prime is 102101222023. The reversal of 102101222021 is 120222101201.

It is a cyclic number.

It is not a de Polignac number, because 102101222021 - 2¹⁴ = 102101205637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102101221987 and 102101222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101222023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25440611 + ... + 25444623.

It is an arithmetic number, because the mean of its divisors is an integer number (6512217264).

Almost surely, 2^102101222021 is an apocalyptic number.

It is an amenable number.

102101222021 is a deficient number, since it is larger than the sum of its proper divisors (2094254203).

102101222021 is a wasteful number, since it uses less digits than its factorization.

102101222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340.

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

Adding to 102101222021 its reverse (120222101201), we get a palindrome (222323323222).

The spelling of 102101222021 in words is "one hundred two billion, one hundred one million, two hundred twenty-two thousand, twenty-one".