1021211002011 has 4 divisors (see below), whose sum is σ = 1361614669352. Its totient is φ = 680807334672.

The previous prime is 1021211001983. The next prime is 1021211002013. The reversal of 1021211002011 is 1102001121201.

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

It is not a de Polignac number, because 1021211002011 - 2¹⁵ = 1021210969243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021211002013) 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, 170201833666 + ... + 170201833671.

It is an arithmetic number, because the mean of its divisors is an integer number (340403667338).

Almost surely, 2^{1021211002011} is an apocalyptic number.

1021211002011 is a deficient number, since it is larger than the sum of its proper divisors (340403667341).

1021211002011 is an equidigital number, since it uses as much as digits as its factorization.

1021211002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340403667340.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021211002011 its reverse (1102001121201), we get a palindrome (2123212123212).

The spelling of 1021211002011 in words is "one trillion, twenty-one billion, two hundred eleven million, two thousand, eleven".