101121212021212 has 48 divisors (see below), whose sum is σ = 186893945798560. Its totient is φ = 47740637288448.

The previous prime is 101121212021209. The next prime is 101121212021237. The reversal of 101121212021212 is 212120212121101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 101121212021212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197017588 + ... + 197530180.

Almost surely, 2^{101121212021212} is an apocalyptic number.

It is an amenable number.

101121212021212 is a deficient number, since it is larger than the sum of its proper divisors (85772733777348).

101121212021212 is a wasteful number, since it uses less digits than its factorization.

101121212021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521222 (or 521220 counting only the distinct ones).

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

Adding to 101121212021212 its reverse (212120212121101), we get a palindrome (313241424142313).

The spelling of 101121212021212 in words is "one hundred one trillion, one hundred twenty-one billion, two hundred twelve million, twenty-one thousand, two hundred twelve".