2221210121011 has 16 divisors (see below), whose sum is σ = 2687925911040. Its totient is φ = 1791850596480.

The previous prime is 2221210120981. The next prime is 2221210121029. The reversal of 2221210121011 is 1101210121222.

It is not a de Polignac number, because 2221210121011 - 2¹⁵ = 2221210088243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221210121041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4365520 + ... + 4847698.

It is an arithmetic number, because the mean of its divisors is an integer number (167995369440).

Almost surely, 2^{2221210121011} is an apocalyptic number.

2221210121011 is a deficient number, since it is larger than the sum of its proper divisors (466715790029).

2221210121011 is a wasteful number, since it uses less digits than its factorization.

2221210121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520914.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2221210121011 its reverse (1101210121222), we get a palindrome (3322420242233).

The spelling of 2221210121011 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty-one thousand, eleven".