101021201100 has 54 divisors (see below), whose sum is σ = 316645345380. Its totient is φ = 26938986720.

The previous prime is 101021201089. The next prime is 101021201227. The reversal of 101021201100 is 1102120101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56121990 + ... + 56123789.

Almost surely, 2^101021201100 is an apocalyptic number.

101021201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101021201100 is an abundant number, since it is smaller than the sum of its proper divisors (215624144280).

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

101021201100 is a wasteful number, since it uses less digits than its factorization.

101021201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112245799 (or 112245789 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101021201100 its reverse (1102120101), we get a palindrome (102123321201).

The spelling of 101021201100 in words is "one hundred one billion, twenty-one million, two hundred one thousand, one hundred".