101011220121 has 16 divisors (see below), whose sum is σ = 154070897024. Its totient is φ = 57664808064.

The previous prime is 101011220087. The next prime is 101011220137. The reversal of 101011220121 is 121022110101.

It is not a de Polignac number, because 101011220121 - 2¹⁰ = 101011219097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101011220097 and 101011220106.

It is not an unprimeable number, because it can be changed into a prime (101011220521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306506 + ... + 2349891.

It is an arithmetic number, because the mean of its divisors is an integer number (9629431064).

Almost surely, 2^101011220121 is an apocalyptic number.

It is an amenable number.

101011220121 is a deficient number, since it is larger than the sum of its proper divisors (53059676903).

101011220121 is a wasteful number, since it uses less digits than its factorization.

101011220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657440.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101011220121 its reverse (121022110101), we get a palindrome (222033330222).

The spelling of 101011220121 in words is "one hundred one billion, eleven million, two hundred twenty thousand, one hundred twenty-one".