30101021221020 has 24 divisors (see below), whose sum is σ = 84282859419024. Its totient is φ = 8026938992256.

The previous prime is 30101021220937. The next prime is 30101021221027. The reversal of 30101021221020 is 2012212010103.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30101021221027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250841843449 + ... + 250841843568.

It is an arithmetic number, because the mean of its divisors is an integer number (3511785809126).

Almost surely, 2^{30101021221020} is an apocalyptic number.

30101021221020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30101021221020 is an abundant number, since it is smaller than the sum of its proper divisors (54181838198004).

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

30101021221020 is a wasteful number, since it uses less digits than its factorization.

30101021221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501683687029 (or 501683687027 counting only the distinct ones).

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

Adding to 30101021221020 its reverse (2012212010103), we get a palindrome (32113233231123).

The spelling of 30101021221020 in words is "thirty trillion, one hundred one billion, twenty-one million, two hundred twenty-one thousand, twenty".