1000121211211 has 8 divisors (see below), whose sum is σ = 1059488627904. Its totient is φ = 940813434240.

The previous prime is 1000121211197. The next prime is 1000121211281. The reversal of 1000121211211 is 1121121210001.

It is a happy number.

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

It is not a de Polignac number, because 1000121211211 - 2¹³ = 1000121203019 is a prime.

It is a super-2 number, since 2×1000121211211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000121211191 and 1000121211200.

It is not an unprimeable number, because it can be changed into a prime (1000121211281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14875395 + ... + 14942476.

It is an arithmetic number, because the mean of its divisors is an integer number (132436078488).

Almost surely, 2^{1000121211211} is an apocalyptic number.

1000121211211 is a deficient number, since it is larger than the sum of its proper divisors (59367416693).

1000121211211 is a wasteful number, since it uses less digits than its factorization.

1000121211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29819861.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1000121211211 its reverse (1121121210001), we get a palindrome (2121242421212).

The spelling of 1000121211211 in words is "one trillion, one hundred twenty-one million, two hundred eleven thousand, two hundred eleven".