20101202011 has 4 divisors (see below), whose sum is σ = 21928584024. Its totient is φ = 18273820000.

The previous prime is 20101201927. The next prime is 20101202021. The reversal of 20101202011 is 11020210102.

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 20101202011 - 2¹⁷ = 20101070939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101202021) 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, 913690990 + ... + 913691011.

It is an arithmetic number, because the mean of its divisors is an integer number (5482146006).

Almost surely, 2^20101202011 is an apocalyptic number.

20101202011 is a deficient number, since it is larger than the sum of its proper divisors (1827382013).

20101202011 is a wasteful number, since it uses less digits than its factorization.

20101202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827382012.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20101202011 its reverse (11020210102), we get a palindrome (31121412113).

It can be divided in two parts, 2010 and 1202011, that added together give a palindrome (1204021).

The spelling of 20101202011 in words is "twenty billion, one hundred one million, two hundred two thousand, eleven".