2211021221010 has 64 divisors (see below), whose sum is σ = 6100829908992. Its totient is φ = 502350065856.

The previous prime is 2211021220997. The next prime is 2211021221011. The reversal of 2211021221010 is 101221201122.

It is a super-2 number, since 2×2211021221010² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2211021221011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31487902 + ... + 31558041.

It is an arithmetic number, because the mean of its divisors is an integer number (95325467328).

Almost surely, 2^{2211021221010} is an apocalyptic number.

2211021221010 is an abundant number, since it is smaller than the sum of its proper divisors (3889808687982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211021221010 is a wasteful number, since it uses less digits than its factorization.

2211021221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63046127.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2211021221010 its reverse (101221201122), we get a palindrome (2312242422132).

The spelling of 2211021221010 in words is "two trillion, two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, ten".