30212021142 has 32 divisors (see below), whose sum is σ = 67226139360. Its totient is φ = 10057426560.

The previous prime is 30212021141. The next prime is 30212021143. The reversal of 30212021142 is 24112021203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30212021141) and next prime (30212021143).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212021141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326503 + ... + 408690.

It is an arithmetic number, because the mean of its divisors is an integer number (2100816855).

Almost surely, 2^30212021142 is an apocalyptic number.

30212021142 is an abundant number, since it is smaller than the sum of its proper divisors (37014118218).

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

30212021142 is a wasteful number, since it uses less digits than its factorization.

30212021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735965 (or 735959 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 30212021142 its reverse (24112021203), we get a palindrome (54324042345).

The spelling of 30212021142 in words is "thirty billion, two hundred twelve million, twenty-one thousand, one hundred forty-two".