1002012121211 has 4 divisors (see below), whose sum is σ = 1060954010712. Its totient is φ = 943070231712.

The previous prime is 1002012121207. The next prime is 1002012121247. The reversal of 1002012121211 is 1121212102001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002012121211 - 2² = 1002012121207 is a prime.

It is a super-2 number, since 2×1002012121211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002012121291) 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, 29470944725 + ... + 29470944758.

It is an arithmetic number, because the mean of its divisors is an integer number (265238502678).

Almost surely, 2^{1002012121211} is an apocalyptic number.

1002012121211 is a deficient number, since it is larger than the sum of its proper divisors (58941889501).

1002012121211 is an equidigital number, since it uses as much as digits as its factorization.

1002012121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58941889500.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1002012121211 its reverse (1121212102001), we get a palindrome (2123224223212).

The spelling of 1002012121211 in words is "one trillion, two billion, twelve million, one hundred twenty-one thousand, two hundred eleven".