1200211010121 has 32 divisors (see below), whose sum is σ = 1643634115200. Its totient is φ = 778731393024.

The previous prime is 1200211010099. The next prime is 1200211010143. The reversal of 1200211010121 is 1210101120021.

It is an interprime number because it is at equal distance from previous prime (1200211010099) and next prime (1200211010143).

It is not a de Polignac number, because 1200211010121 - 2¹³ = 1200211001929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200211010097 and 1200211010106.

It is not an unprimeable number, because it can be changed into a prime (1200211010161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10653730 + ... + 10765796.

It is an arithmetic number, because the mean of its divisors is an integer number (51363566100).

Almost surely, 2^{1200211010121} is an apocalyptic number.

It is an amenable number.

1200211010121 is a deficient number, since it is larger than the sum of its proper divisors (443423105079).

1200211010121 is a wasteful number, since it uses less digits than its factorization.

1200211010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112665.

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

Adding to 1200211010121 its reverse (1210101120021), we get a palindrome (2410312130142).

The spelling of 1200211010121 in words is "one trillion, two hundred billion, two hundred eleven million, ten thousand, one hundred twenty-one".