1211201150 has 12 divisors (see below), whose sum is σ = 2252834232. Its totient is φ = 484480440.

The previous prime is 1211201107. The next prime is 1211201207. The reversal of 1211201150 is 511021121.

It is a super-2 number, since 2×1211201150² = 2934016451522645000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12111962 + ... + 12112061.

It is an arithmetic number, because the mean of its divisors is an integer number (187736186).

Almost surely, 2^1211201150 is an apocalyptic number.

1211201150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211201150 is a deficient number, since it is larger than the sum of its proper divisors (1041633082).

1211201150 is a wasteful number, since it uses less digits than its factorization.

1211201150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24224035 (or 24224030 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 1211201150 is about 34802.3152965431. The cubic root of 1211201150 is about 1065.9547229460.

Adding to 1211201150 its reverse (511021121), we get a palindrome (1722222271).

The spelling of 1211201150 in words is "one billion, two hundred eleven million, two hundred one thousand, one hundred fifty".