1021212002111 has 4 divisors (see below), whose sum is σ = 1167099430992. Its totient is φ = 875324573232.

The previous prime is 1021212002093. The next prime is 1021212002137. The reversal of 1021212002111 is 1112002121201.

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 1021212002111 - 2³⁴ = 1004032132927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021212302111) 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, 72943714430 + ... + 72943714443.

It is an arithmetic number, because the mean of its divisors is an integer number (291774857748).

Almost surely, 2^{1021212002111} is an apocalyptic number.

1021212002111 is a deficient number, since it is larger than the sum of its proper divisors (145887428881).

1021212002111 is an equidigital number, since it uses as much as digits as its factorization.

1021212002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145887428880.

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

Adding to 1021212002111 its reverse (1112002121201), we get a palindrome (2133214123312).

The spelling of 1021212002111 in words is "one trillion, twenty-one billion, two hundred twelve million, two thousand, one hundred eleven".