1021230144 has 168 divisors, whose sum is σ = 3230940960. Its totient is φ = 305817600.

The previous prime is 1021230139. The next prime is 1021230209. The reversal of 1021230144 is 4410321201.

It is a super-2 number, since 2×1021230144² = 2085822014028521472, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562999 + ... + 564809.

Almost surely, 2^1021230144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021230144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615470480).

1021230144 is an abundant number, since it is smaller than the sum of its proper divisors (2209710816).

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

1021230144 is a wasteful number, since it uses less digits than its factorization.

1021230144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929 (or 1916 counting only the distinct ones).

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

The square root of 1021230144 is about 31956.6916936031. The cubic root of 1021230144 is about 1007.0272172127.

Adding to 1021230144 its reverse (4410321201), we get a palindrome (5431551345).

The spelling of 1021230144 in words is "one billion, twenty-one million, two hundred thirty thousand, one hundred forty-four".