1011212001211 has 2 divisors, whose sum is σ = 1011212001212. Its totient is φ = 1011212001210.

The previous prime is 1011212001169. The next prime is 1011212001221. The reversal of 1011212001211 is 1121002121101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011212001211 - 2⁷ = 1011212001083 is a prime.

It is a super-2 number, since 2×1011212001211² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011212001191 and 1011212001200.

It is not a weakly prime, because it can be changed into another prime (1011212001221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505606000605 + 505606000606.

It is an arithmetic number, because the mean of its divisors is an integer number (505606000606).

Almost surely, 2^{1011212001211} is an apocalyptic number.

1011212001211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011212001211 is an equidigital number, since it uses as much as digits as its factorization.

1011212001211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1011212001211 its reverse (1121002121101), we get a palindrome (2132214122312).

The spelling of 1011212001211 in words is "one trillion, eleven billion, two hundred twelve million, one thousand, two hundred eleven".