101220210012 has 24 divisors (see below), whose sum is σ = 236242375936. Its totient is φ = 33731229168.

The previous prime is 101220210011. The next prime is 101220210037. The reversal of 101220210012 is 210012022101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 101220210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220210011) 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, 1057318 + ... + 1149069.

Almost surely, 2^101220210012 is an apocalyptic number.

101220210012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101220210012 is an abundant number, since it is smaller than the sum of its proper divisors (135022165924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101220210012 is a wasteful number, since it uses less digits than its factorization.

101220210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210217 (or 2210215 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101220210012 its reverse (210012022101), we get a palindrome (311232232113).

The spelling of 101220210012 in words is "one hundred one billion, two hundred twenty million, two hundred ten thousand, twelve".