1221101140430 has 16 divisors (see below), whose sum is σ = 2198008198944. Its totient is φ = 488434645920.

The previous prime is 1221101140411. The next prime is 1221101140451. The reversal of 1221101140430 is 340411011221.

It is a super-4 number, since 4×1221101140430⁴ (a number of 49 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214424 + ... + 1577396.

It is an arithmetic number, because the mean of its divisors is an integer number (137375512434).

Almost surely, 2^{1221101140430} is an apocalyptic number.

1221101140430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221101140430 is a deficient number, since it is larger than the sum of its proper divisors (976907058514).

1221101140430 is a wasteful number, since it uses less digits than its factorization.

1221101140430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452571.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1221101140430 its reverse (340411011221), we get a palindrome (1561512151651).

The spelling of 1221101140430 in words is "one trillion, two hundred twenty-one billion, one hundred one million, one hundred forty thousand, four hundred thirty".