101220222121 has 8 divisors (see below), whose sum is σ = 108018247680. Its totient is φ = 94515962688.

The previous prime is 101220222113. The next prime is 101220222133. The reversal of 101220222121 is 121222022101.

It is a happy number.

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 101220222121 - 2³ = 101220222113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220222095 and 101220222104.

It is not an unprimeable number, because it can be changed into a prime (101220222151) 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, 23439301 + ... + 23443618.

It is an arithmetic number, because the mean of its divisors is an integer number (13502280960).

Almost surely, 2^101220222121 is an apocalyptic number.

It is an amenable number.

101220222121 is a deficient number, since it is larger than the sum of its proper divisors (6798025559).

101220222121 is a wasteful number, since it uses less digits than its factorization.

101220222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46883063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101220222121 its reverse (121222022101), we get a palindrome (222442244222).

The spelling of 101220222121 in words is "one hundred one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty-one".