1201111001210 has 8 divisors (see below), whose sum is σ = 2161999802196. Its totient is φ = 480444400480.

The previous prime is 1201111001201. The next prime is 1201111001227. The reversal of 1201111001210 is 121001111021.

It can be written as a sum of positive squares in 2 ways, for example, as 1152623401609 + 48487599601 = 1073603^2 + 220199^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1201111001191 and 1201111001200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60055550051 + ... + 60055550070.

Almost surely, 2^{1201111001210} is an apocalyptic number.

1201111001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201111001210 is a deficient number, since it is larger than the sum of its proper divisors (960888800986).

1201111001210 is a wasteful number, since it uses less digits than its factorization.

1201111001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120111100128.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1201111001210 its reverse (121001111021), we get a palindrome (1322112112231).

The spelling of 1201111001210 in words is "one trillion, two hundred one billion, one hundred eleven million, one thousand, two hundred ten".