2221210121010 has 128 divisors (see below), whose sum is σ = 5542736532480. Its totient is φ = 569266790400.

The previous prime is 2221210120981. The next prime is 2221210121029. The reversal of 2221210121010 is 101210121222.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29628934 + ... + 29703806.

It is an arithmetic number, because the mean of its divisors is an integer number (43302629160).

Almost surely, 2^{2221210121010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221210121010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2771368266240).

2221210121010 is an abundant number, since it is smaller than the sum of its proper divisors (3321526411470).

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

2221210121010 is a wasteful number, since it uses less digits than its factorization.

2221210121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75284.

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

Adding to 2221210121010 its reverse (101210121222), we get a palindrome (2322420242232).

The spelling of 2221210121010 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty-one thousand, ten".