1211053965195 has 16 divisors (see below), whose sum is σ = 1974246465312. Its totient is φ = 633708741120.

The previous prime is 1211053965181. The next prime is 1211053965241. The reversal of 1211053965195 is 5915693501121.

It is not a de Polignac number, because 1211053965195 - 2⁴ = 1211053965179 is a prime.

It is a super-2 number, since 2×1211053965195² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 761668366 + ... + 761669955.

It is an arithmetic number, because the mean of its divisors is an integer number (123390404082).

Almost surely, 2^{1211053965195} is an apocalyptic number.

1211053965195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1211053965195 is a deficient number, since it is larger than the sum of its proper divisors (763192500117).

1211053965195 is a wasteful number, since it uses less digits than its factorization.

1211053965195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523338382.

The product of its (nonzero) digits is 364500, while the sum is 48.

The spelling of 1211053965195 in words is "one trillion, two hundred eleven billion, fifty-three million, nine hundred sixty-five thousand, one hundred ninety-five".