1211102146 has 8 divisors (see below), whose sum is σ = 1817568000. Its totient is φ = 605246148.

The previous prime is 1211102131. The next prime is 1211102149. The reversal of 1211102146 is 6412011121.

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

It is not an unprimeable number, because it can be changed into a prime (1211102149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147466 + ... + 155461.

It is an arithmetic number, because the mean of its divisors is an integer number (227196000).

Almost surely, 2^1211102146 is an apocalyptic number.

1211102146 is a deficient number, since it is larger than the sum of its proper divisors (606465854).

1211102146 is a wasteful number, since it uses less digits than its factorization.

1211102146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304928.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1211102146 is about 34800.8928908441. The cubic root of 1211102146 is about 1065.9256783190.

Adding to 1211102146 its reverse (6412011121), we get a palindrome (7623113267).

It can be divided in two parts, 121110 and 2146, that added together give a triangular number (123256 = T₄₉₆).

The spelling of 1211102146 in words is "one billion, two hundred eleven million, one hundred two thousand, one hundred forty-six".