102100021001011 has 4 divisors (see below), whose sum is σ = 111381841092024. Its totient is φ = 92818200910000.

The previous prime is 102100021001003. The next prime is 102100021001047. The reversal of 102100021001011 is 110100120001201.

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 102100021001011 - 2³ = 102100021001003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102100021001051) 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, 4640910045490 + ... + 4640910045511.

It is an arithmetic number, because the mean of its divisors is an integer number (27845460273006).

Almost surely, 2^{102100021001011} is an apocalyptic number.

102100021001011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102100021001011 is a deficient number, since it is larger than the sum of its proper divisors (9281820091013).

102100021001011 is an equidigital number, since it uses as much as digits as its factorization.

102100021001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9281820091012.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 102100021001011 its reverse (110100120001201), we get a palindrome (212200141002212).

The spelling of 102100021001011 in words is "one hundred two trillion, one hundred billion, twenty-one million, one thousand, eleven".