1000002121090 has 32 divisors (see below), whose sum is σ = 2057442819840. Its totient is φ = 342808603584.

The previous prime is 1000002121073. The next prime is 1000002121091. The reversal of 1000002121090 is 901212000001.

It is not an unprimeable number, because it can be changed into a prime (1000002121091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534085 + ... + 1511704.

It is an arithmetic number, because the mean of its divisors is an integer number (64295088120).

Almost surely, 2^{1000002121090} is an apocalyptic number.

1000002121090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000002121090 is an abundant number, since it is smaller than the sum of its proper divisors (1057440698750).

1000002121090 is a wasteful number, since it uses less digits than its factorization.

1000002121090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052786.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1000002121090 its reverse (901212000001), we get a palindrome (1901214121091).

The spelling of 1000002121090 in words is "one trillion, two million, one hundred twenty-one thousand, ninety".