1211023002 has 64 divisors (see below), whose sum is σ = 2929250304. Its totient is φ = 326282880.

The previous prime is 1211023001. The next prime is 1211023013. The reversal of 1211023002 is 2003201121.

It is a super-2 number, since 2×1211023002² = 2933153422746184008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211023001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59758 + ... + 77414.

It is an arithmetic number, because the mean of its divisors is an integer number (45769536).

Almost surely, 2^1211023002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211023002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464625152).

1211023002 is an abundant number, since it is smaller than the sum of its proper divisors (1718227302).

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

1211023002 is a wasteful number, since it uses less digits than its factorization.

1211023002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17763.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1211023002 is about 34799.7557750051. The cubic root of 1211023002 is about 1065.9024588463.

Adding to 1211023002 its reverse (2003201121), we get a palindrome (3214224123).

The spelling of 1211023002 in words is "one billion, two hundred eleven million, twenty-three thousand, two".