20100211121001 has 24 divisors (see below), whose sum is σ = 29607694566912. Its totient is φ = 12120108800800.

The previous prime is 20100211120993. The next prime is 20100211121009. The reversal of 20100211121001 is 10012111200102.

It is an interprime number because it is at equal distance from previous prime (20100211120993) and next prime (20100211121009).

It is not a de Polignac number, because 20100211121001 - 2³ = 20100211120993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20100211121009) 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, 140467785 + ... + 140610806.

It is an arithmetic number, because the mean of its divisors is an integer number (1233653940288).

Almost surely, 2^{20100211121001} is an apocalyptic number.

It is an amenable number.

20100211121001 is a deficient number, since it is larger than the sum of its proper divisors (9507483445911).

20100211121001 is a wasteful number, since it uses less digits than its factorization.

20100211121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281078813 (or 281078802 counting only the distinct ones).

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

Adding to 20100211121001 its reverse (10012111200102), we get a palindrome (30112322321103).

The spelling of 20100211121001 in words is "twenty trillion, one hundred billion, two hundred eleven million, one hundred twenty-one thousand, one".