101021201001220 has 48 divisors (see below), whose sum is σ = 212758648885440. Its totient is φ = 40291601668736.

The previous prime is 101021201001113. The next prime is 101021201001239. The reversal of 101021201001220 is 22100102120101.

It is a self number, because there is not a number n which added to its sum of digits gives 101021201001220.

It is an unprimeable number.

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, 13478739 + ... + 19588741.

It is an arithmetic number, because the mean of its divisors is an integer number (4432471851780).

Almost surely, 2^{101021201001220} is an apocalyptic number.

101021201001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101021201001220 is an abundant number, since it is smaller than the sum of its proper divisors (111737447884220).

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

101021201001220 is a wasteful number, since it uses less digits than its factorization.

101021201001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112404 (or 6112402 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101021201001220 its reverse (22100102120101), we get a palindrome (123121303121321).

The spelling of 101021201001220 in words is "one hundred one trillion, twenty-one billion, two hundred one million, one thousand, two hundred twenty".