1011002101221 has 8 divisors (see below), whose sum is σ = 1540574630464. Its totient is φ = 577715486400.

The previous prime is 1011002101189. The next prime is 1011002101253. The reversal of 1011002101221 is 1221012001101.

It is an interprime number because it is at equal distance from previous prime (1011002101189) and next prime (1011002101253).

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

It is not a de Polignac number, because 1011002101221 - 2⁵ = 1011002101189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011002101197 and 1011002101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011002100221) 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, 24071478580 + ... + 24071478621.

It is an arithmetic number, because the mean of its divisors is an integer number (192571828808).

Almost surely, 2^{1011002101221} is an apocalyptic number.

It is an amenable number.

1011002101221 is a deficient number, since it is larger than the sum of its proper divisors (529572529243).

1011002101221 is an equidigital number, since it uses as much as digits as its factorization.

1011002101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48142957211.

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

Adding to 1011002101221 its reverse (1221012001101), we get a palindrome (2232014102322).

The spelling of 1011002101221 in words is "one trillion, eleven billion, two million, one hundred one thousand, two hundred twenty-one".