1011211221195 has 96 divisors (see below), whose sum is σ = 2072652865920. Its totient is φ = 446237890560.

The previous prime is 1011211221191. The next prime is 1011211221217. The reversal of 1011211221195 is 5911221121101.

It is not a de Polignac number, because 1011211221195 - 2² = 1011211221191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011211221191) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68331537 + ... + 68346333.

It is an arithmetic number, because the mean of its divisors is an integer number (21590134020).

Almost surely, 2^{1011211221195} is an apocalyptic number.

1011211221195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011211221195 is an abundant number, since it is smaller than the sum of its proper divisors (1061441644725).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011211221195 is a wasteful number, since it uses less digits than its factorization.

1011211221195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22325 (or 22322 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 27.

Adding to 1011211221195 its reverse (5911221121101), we get a palindrome (6922432342296).

The spelling of 1011211221195 in words is "one trillion, eleven billion, two hundred eleven million, two hundred twenty-one thousand, one hundred ninety-five".