101221001122010 has 32 divisors (see below), whose sum is σ = 227155701220992. Its totient is φ = 31549402946880.

The previous prime is 101221001121983. The next prime is 101221001122019. The reversal of 101221001122010 is 10221100122101.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101221001122019) 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 15 ways as a sum of consecutive naturals, for example, 65727922037 + ... + 65727923576.

It is an arithmetic number, because the mean of its divisors is an integer number (7098615663156).

Almost surely, 2^{101221001122010} is an apocalyptic number.

101221001122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221001122010 is an abundant number, since it is smaller than the sum of its proper divisors (125934700098982).

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

101221001122010 is a wasteful number, since it uses less digits than its factorization.

101221001122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131455845638.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101221001122010 its reverse (10221100122101), we get a palindrome (111442101244111).

Subtracting from 101221001122010 its reverse (10221100122101), we obtain a palindrome (90999900999909).

The spelling of 101221001122010 in words is "one hundred one trillion, two hundred twenty-one billion, one million, one hundred twenty-two thousand, ten".