221051421062142 has 32 divisors (see below), whose sum is σ = 489492427653504. Its totient is φ = 65985498823200.

The previous prime is 221051421062113. The next prime is 221051421062191. The reversal of 221051421062142 is 241260124150122.

It is a super-2 number, since 2×221051421062142² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24994502709 + ... + 24994511552.

It is an arithmetic number, because the mean of its divisors is an integer number (15296638364172).

Almost surely, 2^{221051421062142} is an apocalyptic number.

221051421062142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221051421062142 is an abundant number, since it is smaller than the sum of its proper divisors (268441006591362).

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

221051421062142 is a wasteful number, since it uses less digits than its factorization.

221051421062142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49989014344.

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 221051421062142 in words is "two hundred twenty-one trillion, fifty-one billion, four hundred twenty-one million, sixty-two thousand, one hundred forty-two".