201102021011 has 4 divisors (see below), whose sum is σ = 201103231224. Its totient is φ = 201100810800.

The previous prime is 201102020993. The next prime is 201102021091. The reversal of 201102021011 is 110120201102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201102021011 - 2²² = 201097826707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201102020983 and 201102021001.

It is not an unprimeable number, because it can be changed into a prime (201102021091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306845 + ... + 704526.

It is an arithmetic number, because the mean of its divisors is an integer number (50275807806).

Almost surely, 2^201102021011 is an apocalyptic number.

201102021011 is a deficient number, since it is larger than the sum of its proper divisors (1210213).

201102021011 is a wasteful number, since it uses less digits than its factorization.

201102021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210212.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201102021011 its reverse (110120201102), we get a palindrome (311222222113).

The spelling of 201102021011 in words is "two hundred one billion, one hundred two million, twenty-one thousand, eleven".