20012211101001 has 48 divisors (see below), whose sum is σ = 31134335547840. Its totient is φ = 11400604951680.

The previous prime is 20012211100963. The next prime is 20012211101131. The reversal of 20012211101001 is 10010111221002.

It is not a de Polignac number, because 20012211101001 - 2⁹ = 20012211100489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012216101001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65776110 + ... + 66079656.

It is an arithmetic number, because the mean of its divisors is an integer number (648631990580).

Almost surely, 2^{20012211101001} is an apocalyptic number.

20012211101001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20012211101001 is a deficient number, since it is larger than the sum of its proper divisors (11122124446839).

20012211101001 is a wasteful number, since it uses less digits than its factorization.

20012211101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304934 (or 304927 counting only the distinct ones).

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

Adding to 20012211101001 its reverse (10010111221002), we get a palindrome (30022322322003).

The spelling of 20012211101001 in words is "twenty trillion, twelve billion, two hundred eleven million, one hundred one thousand, one".