1211214454 has 32 divisors (see below), whose sum is σ = 2002581504. Its totient is φ = 547525440.

The previous prime is 1211214437. The next prime is 1211214457. The reversal of 1211214454 is 4544121121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211214457) 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, 51442 + ... + 71194.

It is an arithmetic number, because the mean of its divisors is an integer number (62580672).

Almost surely, 2^1211214454 is an apocalyptic number.

1211214454 is a deficient number, since it is larger than the sum of its proper divisors (791367050).

1211214454 is a wasteful number, since it uses less digits than its factorization.

1211214454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19852.

The product of its digits is 1280, while the sum is 25.

The square root of 1211214454 is about 34802.5064327269. The cubic root of 1211214454 is about 1065.9586257962.

Adding to 1211214454 its reverse (4544121121), we get a palindrome (5755335575).

The spelling of 1211214454 in words is "one billion, two hundred eleven million, two hundred fourteen thousand, four hundred fifty-four".