101201121221020 has 24 divisors (see below), whose sum is σ = 221762456937504. Its totient is φ = 38720428988736.

The previous prime is 101201121220987. The next prime is 101201121221023. The reversal of 101201121221020 is 20122121102101.

It is a junction number, because it is equal to n+sod(n) for n = 101201121220985 and 101201121221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201121221023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110001218259 + ... + 110001219178.

It is an arithmetic number, because the mean of its divisors is an integer number (9240102372396).

Almost surely, 2^{101201121221020} is an apocalyptic number.

101201121221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101201121221020 is an abundant number, since it is smaller than the sum of its proper divisors (120561335716484).

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

101201121221020 is a wasteful number, since it uses less digits than its factorization.

101201121221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220002437469 (or 220002437467 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101201121221020 its reverse (20122121102101), we get a palindrome (121323242323121).

The spelling of 101201121221020 in words is "one hundred one trillion, two hundred one billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty".