102001201011 has 24 divisors (see below), whose sum is σ = 150949256640. Its totient is φ = 66333168000.

The previous prime is 102001200989. The next prime is 102001201061. The reversal of 102001201011 is 110102100201.

It is a happy number.

It is not a de Polignac number, because 102001201011 - 2¹⁷ = 102001069939 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 = 102001200984 and 102001201002.

It is not an unprimeable number, because it can be changed into a prime (102001201061) 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, 3639510 + ... + 3667428.

It is an arithmetic number, because the mean of its divisors is an integer number (6289552360).

Almost surely, 2^102001201011 is an apocalyptic number.

102001201011 is a deficient number, since it is larger than the sum of its proper divisors (48948055629).

102001201011 is a wasteful number, since it uses less digits than its factorization.

102001201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37867 (or 37864 counting only the distinct ones).

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

Adding to 102001201011 its reverse (110102100201), we get a palindrome (212103301212).

The spelling of 102001201011 in words is "one hundred two billion, one million, two hundred one thousand, eleven".