1220217542142 has 32 divisors (see below), whose sum is σ = 2462651571744. Its totient is φ = 403052428800.

The previous prime is 1220217542069. The next prime is 1220217542153. The reversal of 1220217542142 is 2412457120221.

It is a happy number.

It is a congruent number.

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, 1694103 + ... + 2304434.

It is an arithmetic number, because the mean of its divisors is an integer number (76957861617).

Almost surely, 2^{1220217542142} is an apocalyptic number.

1220217542142 is an abundant number, since it is smaller than the sum of its proper divisors (1242434029602).

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

1220217542142 is a wasteful number, since it uses less digits than its factorization.

1220217542142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999004.

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 1220217542142 in words is "one trillion, two hundred twenty billion, two hundred seventeen million, five hundred forty-two thousand, one hundred forty-two".