20212233142 has 4 divisors (see below), whose sum is σ = 30318349716. Its totient is φ = 10106116570.

The previous prime is 20212233137. The next prime is 20212233143. The reversal of 20212233142 is 24133221202.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212233143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053058284 + ... + 5053058287.

It is an arithmetic number, because the mean of its divisors is an integer number (7579587429).

Almost surely, 2^20212233142 is an apocalyptic number.

20212233142 is a deficient number, since it is larger than the sum of its proper divisors (10106116574).

20212233142 is a wasteful number, since it uses less digits than its factorization.

20212233142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106116573.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20212233142 its reverse (24133221202), we get a palindrome (44345454344).

The spelling of 20212233142 in words is "twenty billion, two hundred twelve million, two hundred thirty-three thousand, one hundred forty-two".