101220121011 has 8 divisors (see below), whose sum is σ = 134961872320. Its totient is φ = 67479225192.

The previous prime is 101220120961. The next prime is 101220121019. The reversal of 101220121011 is 110121022101.

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

It is not a de Polignac number, because 101220121011 - 2¹⁴ = 101220104627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220121019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151260 + ... + 474678.

It is an arithmetic number, because the mean of its divisors is an integer number (16870234040).

Almost surely, 2^101220121011 is an apocalyptic number.

101220121011 is a deficient number, since it is larger than the sum of its proper divisors (33741751309).

101220121011 is a wasteful number, since it uses less digits than its factorization.

101220121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427745.

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

Adding to 101220121011 its reverse (110121022101), we get a palindrome (211341143112).

The spelling of 101220121011 in words is "one hundred one billion, two hundred twenty million, one hundred twenty-one thousand, eleven".