101421124020 has 72 divisors (see below), whose sum is σ = 315958801704. Its totient is φ = 26314668288.

The previous prime is 101421123961. The next prime is 101421124037. The reversal of 101421124020 is 20421124101.

101421124020 is a `hidden beast` number, since 1 + 0 + 1 + 421 + 1 + 240 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11356312356 + 90064811664 = 106566^2 + 300108^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 101421123984 and 101421124002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7607539 + ... + 7620858.

Almost surely, 2^101421124020 is an apocalyptic number.

101421124020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101421124020 is an abundant number, since it is smaller than the sum of its proper divisors (214537677684).

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

101421124020 is a wasteful number, since it uses less digits than its factorization.

101421124020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15228449 (or 15228444 counting only the distinct ones).

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

Adding to 101421124020 its reverse (20421124101), we get a palindrome (121842248121).

The spelling of 101421124020 in words is "one hundred one billion, four hundred twenty-one million, one hundred twenty-four thousand, twenty".