1010221212138 has 16 divisors (see below), whose sum is σ = 2020486852800. Its totient is φ = 336732999296.

The previous prime is 1010221212137. The next prime is 1010221212197. The reversal of 1010221212138 is 8312121220101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1010221212137) 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, 1551870 + ... + 2104457.

It is an arithmetic number, because the mean of its divisors is an integer number (126280428300).

Almost surely, 2^{1010221212138} is an apocalyptic number.

1010221212138 is an abundant number, since it is smaller than the sum of its proper divisors (1010265640662).

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

1010221212138 is a wasteful number, since it uses less digits than its factorization.

1010221212138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702381.

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 1010221212138 its reverse (8312121220101), we get a palindrome (9322342432239).

The spelling of 1010221212138 in words is "one trillion, ten billion, two hundred twenty-one million, two hundred twelve thousand, one hundred thirty-eight".