1000211200121 has 4 divisors (see below), whose sum is σ = 1143098514432. Its totient is φ = 857323885812.

The previous prime is 1000211200057. The next prime is 1000211200123. The reversal of 1000211200121 is 1210021120001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1000211200121 - 2⁶ = 1000211200057 is a prime.

It is a super-2 number, since 2×1000211200121² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000211200123) 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, 71443657145 + ... + 71443657158.

It is an arithmetic number, because the mean of its divisors is an integer number (285774628608).

Almost surely, 2^{1000211200121} is an apocalyptic number.

It is an amenable number.

1000211200121 is a deficient number, since it is larger than the sum of its proper divisors (142887314311).

1000211200121 is an equidigital number, since it uses as much as digits as its factorization.

1000211200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142887314310.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000211200121 its reverse (1210021120001), we get a palindrome (2210232320122).

The spelling of 1000211200121 in words is "one trillion, two hundred eleven million, two hundred thousand, one hundred twenty-one".