1021221010011 has 8 divisors (see below), whose sum is σ = 1361651433984. Its totient is φ = 680802296360.

The previous prime is 1021221010003. The next prime is 1021221010027. The reversal of 1021221010011 is 1100101221201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021221010011 - 2³ = 1021221010003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021221010001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2722035 + ... + 3074396.

It is an arithmetic number, because the mean of its divisors is an integer number (170206429248).

Almost surely, 2^{1021221010011} is an apocalyptic number.

1021221010011 is a deficient number, since it is larger than the sum of its proper divisors (340430423973).

1021221010011 is an equidigital number, since it uses as much as digits as its factorization.

1021221010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855161.

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

Adding to 1021221010011 its reverse (1100101221201), we get a palindrome (2121322231212).

The spelling of 1021221010011 in words is "one trillion, twenty-one billion, two hundred twenty-one million, ten thousand, eleven".