1021220100011 has 4 divisors (see below), whose sum is σ = 1034146936800. Its totient is φ = 1008293263224.

The previous prime is 1021220099989. The next prime is 1021220100053. The reversal of 1021220100011 is 1100010221201.

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 1021220100011 - 2¹⁴ = 1021220083627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021220099965 and 1021220100001.

It is not an unprimeable number, because it can be changed into a prime (1021220100071) 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, 6463418276 + ... + 6463418433.

It is an arithmetic number, because the mean of its divisors is an integer number (258536734200).

Almost surely, 2^{1021220100011} is an apocalyptic number.

1021220100011 is a deficient number, since it is larger than the sum of its proper divisors (12926836789).

1021220100011 is an equidigital number, since it uses as much as digits as its factorization.

1021220100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926836788.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021220100011 its reverse (1100010221201), we get a palindrome (2121230321212).

The spelling of 1021220100011 in words is "one trillion, twenty-one billion, two hundred twenty million, one hundred thousand, eleven".