101220122111212 has 48 divisors (see below), whose sum is σ = 191911813676352. Its totient is φ = 46435172244480.

The previous prime is 101220122111179. The next prime is 101220122111219. The reversal of 101220122111212 is 212111221022101.

It is a happy number.

It is a super-2 number, since 2×101220122111212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101220122111212.

It is not an unprimeable number, because it can be changed into a prime (101220122111219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204356368 + ... + 204851080.

It is an arithmetic number, because the mean of its divisors is an integer number (3998162784924).

Almost surely, 2^{101220122111212} is an apocalyptic number.

It is an amenable number.

101220122111212 is a deficient number, since it is larger than the sum of its proper divisors (90691691565140).

101220122111212 is a wasteful number, since it uses less digits than its factorization.

101220122111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518458 (or 518456 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101220122111212 its reverse (212111221022101), we get a palindrome (313331343133313).

The spelling of 101220122111212 in words is "one hundred one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".