1121213401 has 16 divisors (see below), whose sum is σ = 1411458048. Its totient is φ = 865184400.

The previous prime is 1121213383. The next prime is 1121213437. The reversal of 1121213401 is 1043121211.

It is a cyclic number.

It is not a de Polignac number, because 1121213401 - 2²³ = 1112824793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121213201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62755 + ... + 78616.

It is an arithmetic number, because the mean of its divisors is an integer number (88216128).

Almost surely, 2^1121213401 is an apocalyptic number.

1121213401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121213401 is a deficient number, since it is larger than the sum of its proper divisors (290244647).

1121213401 is a wasteful number, since it uses less digits than its factorization.

1121213401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141492.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1121213401 is about 33484.5247987783. The cubic root of 1121213401 is about 1038.8737193922.

Adding to 1121213401 its reverse (1043121211), we get a palindrome (2164334612).

The spelling of 1121213401 in words is "one billion, one hundred twenty-one million, two hundred thirteen thousand, four hundred one".