101220012122221 has 8 divisors (see below), whose sum is σ = 102167194783104. Its totient is φ = 100272851706720.

The previous prime is 101220012122171. The next prime is 101220012122297. The reversal of 101220012122221 is 122221210022101.

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 101220012122221 - 2¹¹ = 101220012120173 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 (101220012122321) 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, 3652641 + ... + 14689513.

It is an arithmetic number, because the mean of its divisors is an integer number (12770899347888).

Almost surely, 2^{101220012122221} is an apocalyptic number.

It is an amenable number.

101220012122221 is a deficient number, since it is larger than the sum of its proper divisors (947182660883).

101220012122221 is a wasteful number, since it uses less digits than its factorization.

101220012122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122691.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101220012122221 its reverse (122221210022101), we get a palindrome (223441222144322).

The spelling of 101220012122221 in words is "one hundred one trillion, two hundred twenty billion, twelve million, one hundred twenty-two thousand, two hundred twenty-one".