221252512051442 has 32 divisors (see below), whose sum is σ = 340699601088000. Its totient is φ = 107697527625600.

The previous prime is 221252512051429. The next prime is 221252512051457. The reversal of 221252512051442 is 244150215252122.

It is a junction number, because it is equal to n+sod(n) for n = 221252512051396 and 221252512051405.

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, 885554717 + ... + 885804527.

It is an arithmetic number, because the mean of its divisors is an integer number (10646862534000).

Almost surely, 2^{221252512051442} is an apocalyptic number.

221252512051442 is a deficient number, since it is larger than the sum of its proper divisors (119447089036558).

221252512051442 is a wasteful number, since it uses less digits than its factorization.

221252512051442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272882.

The product of its (nonzero) digits is 128000, while the sum is 38.

The spelling of 221252512051442 in words is "two hundred twenty-one trillion, two hundred fifty-two billion, five hundred twelve million, fifty-one thousand, four hundred forty-two".