20110201011121 has 16 divisors (see below), whose sum is σ = 21735222300288. Its totient is φ = 18496340553600.

The previous prime is 20110201011007. The next prime is 20110201011127. The reversal of 20110201011121 is 12111010201102.

It is a happy number.

It is not a de Polignac number, because 20110201011121 - 2¹⁵ = 20110200978353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110201011127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86412406 + ... + 86644816.

It is an arithmetic number, because the mean of its divisors is an integer number (1358451393768).

Almost surely, 2^{20110201011121} is an apocalyptic number.

It is an amenable number.

20110201011121 is a deficient number, since it is larger than the sum of its proper divisors (1625021289167).

20110201011121 is a wasteful number, since it uses less digits than its factorization.

20110201011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256392.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20110201011121 its reverse (12111010201102), we get a palindrome (32221211212223).

The spelling of 20110201011121 in words is "twenty trillion, one hundred ten billion, two hundred one million, eleven thousand, one hundred twenty-one".