3221012011020 has 48 divisors (see below), whose sum is σ = 9019047303168. Its totient is φ = 858916186560.

The previous prime is 3221012011003. The next prime is 3221012011027. The reversal of 3221012011020 is 201102101223.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (3221012011027) 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, 2008587 + ... + 3236733.

It is an arithmetic number, because the mean of its divisors is an integer number (187896818816).

Almost surely, 2^{3221012011020} is an apocalyptic number.

3221012011020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3221012011020 is an abundant number, since it is smaller than the sum of its proper divisors (5798035292148).

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

3221012011020 is a wasteful number, since it uses less digits than its factorization.

3221012011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271870 (or 1271868 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 3221012011020 its reverse (201102101223), we get a palindrome (3422114112243).

The spelling of 3221012011020 in words is "three trillion, two hundred twenty-one billion, twelve million, eleven thousand, twenty".