1224121101 has 32 divisors (see below), whose sum is σ = 1898201088. Its totient is φ = 687264960.

The previous prime is 1224121097. The next prime is 1224121163. The reversal of 1224121101 is 1011214221.

1224121101 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1224121101 - 2² = 1224121097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224121501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331075 + ... + 334751.

It is an arithmetic number, because the mean of its divisors is an integer number (59318784).

Almost surely, 2^1224121101 is an apocalyptic number.

It is an amenable number.

1224121101 is a deficient number, since it is larger than the sum of its proper divisors (674079987).

1224121101 is a wasteful number, since it uses less digits than its factorization.

1224121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1224121101 is about 34987.4420471117. The cubic root of 1224121101 is about 1069.7315252123.

Adding to 1224121101 its reverse (1011214221), we get a palindrome (2235335322).

The spelling of 1224121101 in words is "one billion, two hundred twenty-four million, one hundred twenty-one thousand, one hundred one".