102001100020011 has 24 divisors (see below), whose sum is σ = 151158072414960. Its totient is φ = 66256601703936.

The previous prime is 102001100020009. The next prime is 102001100020051. The reversal of 102001100020011 is 110020001100201.

It is a happy number.

It is not a de Polignac number, because 102001100020011 - 2¹ = 102001100020009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102001100019975 and 102001100020002.

It is not an unprimeable number, because it can be changed into a prime (102001100020051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 849906666 + ... + 850026671.

It is an arithmetic number, because the mean of its divisors is an integer number (6298253017290).

Almost surely, 2^{102001100020011} is an apocalyptic number.

102001100020011 is a deficient number, since it is larger than the sum of its proper divisors (49156972394949).

102001100020011 is a wasteful number, since it uses less digits than its factorization.

102001100020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699933515 (or 1699933512 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 102001100020011 its reverse (110020001100201), we get a palindrome (212021101120212).

The spelling of 102001100020011 in words is "one hundred two trillion, one billion, one hundred million, twenty thousand, eleven".