1222542061 has 16 divisors (see below), whose sum is σ = 1391342400. Its totient is φ = 1064890368.

The previous prime is 1222542031. The next prime is 1222542091. The reversal of 1222542061 is 1602452221.

It is an interprime number because it is at equal distance from previous prime (1222542031) and next prime (1222542091).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222542061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222542011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53850 + ... + 73108.

It is an arithmetic number, because the mean of its divisors is an integer number (86958900).

Almost surely, 2^1222542061 is an apocalyptic number.

It is an amenable number.

1222542061 is a deficient number, since it is larger than the sum of its proper divisors (168800339).

1222542061 is a wasteful number, since it uses less digits than its factorization.

1222542061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19548.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1222542061 is about 34964.8689544234. The cubic root of 1222542061 is about 1069.2713649427.

Adding to 1222542061 its reverse (1602452221), we get a palindrome (2824994282).

The spelling of 1222542061 in words is "one billion, two hundred twenty-two million, five hundred forty-two thousand, sixty-one".