101221012220202 has 64 divisors (see below), whose sum is σ = 257070625539840. Its totient is φ = 28920133038528.

The previous prime is 101221012220201. The next prime is 101221012220213. The reversal of 101221012220202 is 202022210122101.

It is a happy number.

101221012220202 is a `hidden beast` number, since 10 + 1 + 221 + 0 + 12 + 220 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (101221012220201) 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 31 ways as a sum of consecutive naturals, for example, 81819148 + ... + 83047064.

It is an arithmetic number, because the mean of its divisors is an integer number (4016728524060).

Almost surely, 2^{101221012220202} is an apocalyptic number.

101221012220202 is an abundant number, since it is smaller than the sum of its proper divisors (155849613319638).

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

101221012220202 is a wasteful number, since it uses less digits than its factorization.

101221012220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446012 (or 1446006 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 101221012220202 its reverse (202022210122101), we get a palindrome (303243222342303).

The spelling of 101221012220202 in words is "one hundred one trillion, two hundred twenty-one billion, twelve million, two hundred twenty thousand, two hundred two".