101021111200 has 36 divisors (see below), whose sum is σ = 246617789670. Its totient is φ = 40408444160.

The previous prime is 101021111183. The next prime is 101021111203. The reversal of 101021111200 is 2111120101.

It can be written as a sum of positive squares in 3 ways, for example, as 98146864656 + 2874246544 = 313284^2 + 53612^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (101021111203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63137395 + ... + 63138994.

Almost surely, 2^101021111200 is an apocalyptic number.

101021111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101021111200 is an abundant number, since it is smaller than the sum of its proper divisors (145596678470).

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

101021111200 is a wasteful number, since it uses less digits than its factorization.

101021111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126276409 (or 126276396 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101021111200 its reverse (2111120101), we get a palindrome (103132231301).

The spelling of 101021111200 in words is "one hundred one billion, twenty-one million, one hundred eleven thousand, two hundred".