19900101011 has 8 divisors (see below), whose sum is σ = 23082420480. Its totient is φ = 16802643528.

The previous prime is 19900100951. The next prime is 19900101029. The reversal of 19900101011 is 11010100991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19900101011 - 2⁶ = 19900100947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19900101061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21214991 + ... + 21215928.

It is an arithmetic number, because the mean of its divisors is an integer number (2885302560).

Almost surely, 2^19900101011 is an apocalyptic number.

19900101011 is a deficient number, since it is larger than the sum of its proper divisors (3182319469).

19900101011 is an equidigital number, since it uses as much as digits as its factorization.

19900101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42430993.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 19900101011 in words is "nineteen billion, nine hundred million, one hundred one thousand, eleven".