202123021032 has 128 divisors (see below), whose sum is σ = 564056169600. Its totient is φ = 67062587904.

The previous prime is 202123020971. The next prime is 202123021091. The reversal of 202123021032 is 230120321202.

It is a super-2 number, since 2×202123021032² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 202123020996 and 202123021014.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62132718 + ... + 62135970.

It is an arithmetic number, because the mean of its divisors is an integer number (4406688825).

Almost surely, 2^202123021032 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 202123021032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282028084800).

202123021032 is an abundant number, since it is smaller than the sum of its proper divisors (361933148568).

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

202123021032 is a wasteful number, since it uses less digits than its factorization.

202123021032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512 (or 4502 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 202123021032 its reverse (230120321202), we get a palindrome (432243342234).

The spelling of 202123021032 in words is "two hundred two billion, one hundred twenty-three million, twenty-one thousand, thirty-two".