1201622202166 has 16 divisors (see below), whose sum is σ = 1836696408624. Its totient is φ = 589393213344.

The previous prime is 1201622202163. The next prime is 1201622202169. The reversal of 1201622202166 is 6612022261021.

It is an interprime number because it is at equal distance from previous prime (1201622202163) and next prime (1201622202169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201622202163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16080 + ... + 1550323.

It is an arithmetic number, because the mean of its divisors is an integer number (114793525539).

Almost surely, 2^{1201622202166} is an apocalyptic number.

1201622202166 is a deficient number, since it is larger than the sum of its proper divisors (635074206458).

1201622202166 is a wasteful number, since it uses less digits than its factorization.

1201622202166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573695.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 1201622202166 its reverse (6612022261021), we get a palindrome (7813644463187).

The spelling of 1201622202166 in words is "one trillion, two hundred one billion, six hundred twenty-two million, two hundred two thousand, one hundred sixty-six".