202120144243342 has 16 divisors (see below), whose sum is σ = 327411247171680. Its totient is φ = 93026370219552.

The previous prime is 202120144243271. The next prime is 202120144243529. The reversal of 202120144243342 is 243342441021202.

It is a super-2 number, since 2×202120144243342² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202120144243298 and 202120144243307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10827082173 + ... + 10827100840.

It is an arithmetic number, because the mean of its divisors is an integer number (20463202948230).

Almost surely, 2^{202120144243342} is an apocalyptic number.

202120144243342 is a deficient number, since it is larger than the sum of its proper divisors (125291102928338).

202120144243342 is a wasteful number, since it uses less digits than its factorization.

202120144243342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21654183387.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 202120144243342 its reverse (243342441021202), we get a palindrome (445462585264544).

The spelling of 202120144243342 in words is "two hundred two trillion, one hundred twenty billion, one hundred forty-four million, two hundred forty-three thousand, three hundred forty-two".