101212120990 has 8 divisors (see below), whose sum is σ = 182181817800. Its totient is φ = 40484848392.

The previous prime is 101212120981. The next prime is 101212120991. The reversal of 101212120990 is 99021212101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212120991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5060606040 + ... + 5060606059.

It is an arithmetic number, because the mean of its divisors is an integer number (22772727225).

Almost surely, 2^101212120990 is an apocalyptic number.

101212120990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101212120990 is a deficient number, since it is larger than the sum of its proper divisors (80969696810).

101212120990 is a wasteful number, since it uses less digits than its factorization.

101212120990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10121212106.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 101212120990 in words is "one hundred one billion, two hundred twelve million, one hundred twenty thousand, nine hundred ninety".