10201021111 has 8 divisors (see below), whose sum is σ = 10645584480. Its totient is φ = 9756544512.

The previous prime is 10201021091. The next prime is 10201021123. The reversal of 10201021111 is 11112010201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10201021111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201021811) 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, 366751 + ... + 393583.

It is an arithmetic number, because the mean of its divisors is an integer number (1330698060).

Almost surely, 2^10201021111 is an apocalyptic number.

10201021111 is a deficient number, since it is larger than the sum of its proper divisors (444563369).

10201021111 is a wasteful number, since it uses less digits than its factorization.

10201021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43385.

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

Adding to 10201021111 its reverse (11112010201), we get a palindrome (21313031312).

The spelling of 10201021111 in words is "ten billion, two hundred one million, twenty-one thousand, one hundred eleven".