101021100201 has 12 divisors (see below), whose sum is σ = 166764990912. Its totient is φ = 57726342936.

The previous prime is 101021100199. The next prime is 101021100233. The reversal of 101021100201 is 102001120101.

It is a happy number.

It is not a de Polignac number, because 101021100201 - 2¹ = 101021100199 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101021100241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801754701 + ... + 801754826.

It is an arithmetic number, because the mean of its divisors is an integer number (13897082576).

Almost surely, 2^101021100201 is an apocalyptic number.

It is an amenable number.

101021100201 is a deficient number, since it is larger than the sum of its proper divisors (65743890711).

101021100201 is a wasteful number, since it uses less digits than its factorization.

101021100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603509540 (or 1603509537 counting only the distinct ones).

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

Adding to 101021100201 its reverse (102001120101), we get a palindrome (203022220302).

The spelling of 101021100201 in words is "one hundred one billion, twenty-one million, one hundred thousand, two hundred one".