3121020221230 has 32 divisors (see below), whose sum is σ = 6051035548800. Its totient is φ = 1155197689632.

The previous prime is 3121020221201. The next prime is 3121020221233. The reversal of 3121020221230 is 321220201213.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 3121020221198 and 3121020221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121020221233) 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, 190996740 + ... + 191013079.

It is an arithmetic number, because the mean of its divisors is an integer number (189094860900).

Almost surely, 2^{3121020221230} is an apocalyptic number.

3121020221230 is a deficient number, since it is larger than the sum of its proper divisors (2930015327570).

3121020221230 is a wasteful number, since it uses less digits than its factorization.

3121020221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382009888.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 3121020221230 its reverse (321220201213), we get a palindrome (3442240422443).

The spelling of 3121020221230 in words is "three trillion, one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, two hundred thirty".