101221220222121 has 8 divisors (see below), whose sum is σ = 134961685466464. Its totient is φ = 67480784229600.

The previous prime is 101221220222113. The next prime is 101221220222123. The reversal of 101221220222121 is 121222022122101.

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

It is not a de Polignac number, because 101221220222121 - 2³ = 101221220222113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101221220222123) 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, 2732421 + ... + 14488221.

It is an arithmetic number, because the mean of its divisors is an integer number (16870210683308).

Almost surely, 2^{101221220222121} is an apocalyptic number.

It is an amenable number.

101221220222121 is a deficient number, since it is larger than the sum of its proper divisors (33740465244343).

101221220222121 is a wasteful number, since it uses less digits than its factorization.

101221220222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14625911.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 101221220222121 its reverse (121222022122101), we get a palindrome (222443242344222).

The spelling of 101221220222121 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty-one".