20102121001011 has 32 divisors (see below), whose sum is σ = 31383640382976. Its totient is φ = 11205071712000.

The previous prime is 20102121001009. The next prime is 20102121001051. The reversal of 20102121001011 is 11010012120102.

It is not a de Polignac number, because 20102121001011 - 2¹ = 20102121001009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102121001051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3982576 + ... + 7487666.

It is an arithmetic number, because the mean of its divisors is an integer number (980738761968).

Almost surely, 2^{20102121001011} is an apocalyptic number.

20102121001011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20102121001011 is a deficient number, since it is larger than the sum of its proper divisors (11281519381965).

20102121001011 is a wasteful number, since it uses less digits than its factorization.

20102121001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511803.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20102121001011 its reverse (11010012120102), we get a palindrome (31112133121113).

The spelling of 20102121001011 in words is "twenty trillion, one hundred two billion, one hundred twenty-one million, one thousand, eleven".