1221110011134 has 24 divisors (see below), whose sum is σ = 2849256693192. Its totient is φ = 375726157200.

The previous prime is 1221110011117. The next prime is 1221110011157. The reversal of 1221110011134 is 4311100111221.

It is a super-2 number, since 2×1221110011134² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2609209192 + ... + 2609209659.

It is an arithmetic number, because the mean of its divisors is an integer number (118719028883).

Almost surely, 2^{1221110011134} is an apocalyptic number.

1221110011134 is an abundant number, since it is smaller than the sum of its proper divisors (1628146682058).

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

1221110011134 is a wasteful number, since it uses less digits than its factorization.

1221110011134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218418872 (or 5218418869 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1221110011134 its reverse (4311100111221), we get a palindrome (5532210122355).

The spelling of 1221110011134 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, eleven thousand, one hundred thirty-four".