1212340167770 has 16 divisors (see below), whose sum is σ = 2232961426080. Its totient is φ = 473658483984.

The previous prime is 1212340167749. The next prime is 1212340167791. The reversal of 1212340167770 is 777610432121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1212340167749) and next prime (1212340167791).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1409697440 + ... + 1409698299.

It is an arithmetic number, because the mean of its divisors is an integer number (139560089130).

Almost surely, 2^{1212340167770} is an apocalyptic number.

1212340167770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212340167770 is a deficient number, since it is larger than the sum of its proper divisors (1020621258310).

1212340167770 is a wasteful number, since it uses less digits than its factorization.

1212340167770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819395789.

The product of its (nonzero) digits is 98784, while the sum is 41.

Adding to 1212340167770 its reverse (777610432121), we get a palindrome (1989950599891).

The spelling of 1212340167770 in words is "one trillion, two hundred twelve billion, three hundred forty million, one hundred sixty-seven thousand, seven hundred seventy".