1121401011 has 8 divisors (see below), whose sum is σ = 1495659664. Its totient is φ = 747371520.

The previous prime is 1121401009. The next prime is 1121401049. The reversal of 1121401011 is 1101041211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121401011 - 2¹ = 1121401009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121401091) 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, 45526 + ... + 65691.

It is an arithmetic number, because the mean of its divisors is an integer number (186957458).

Almost surely, 2^1121401011 is an apocalyptic number.

1121401011 is a deficient number, since it is larger than the sum of its proper divisors (374258653).

1121401011 is a wasteful number, since it uses less digits than its factorization.

1121401011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114581.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1121401011 is about 33487.3261249685. The cubic root of 1121401011 is about 1038.9316602589.

Adding to 1121401011 its reverse (1101041211), we get a palindrome (2222442222).

The spelling of 1121401011 in words is "one billion, one hundred twenty-one million, four hundred one thousand, eleven".