1002121211 has 16 divisors (see below), whose sum is σ = 1251796224. Its totient is φ = 781048224.

The previous prime is 1002121181. The next prime is 1002121217. The reversal of 1002121211 is 1121212001.

It is a cyclic number.

It is not a de Polignac number, because 1002121211 - 2²² = 997926907 is a prime.

It is a super-2 number, since 2×1002121211² = 2008493843072213042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1002121192 and 1002121201.

It is not an unprimeable number, because it can be changed into a prime (1002121217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76085 + ... + 88278.

It is an arithmetic number, because the mean of its divisors is an integer number (78237264).

Almost surely, 2^1002121211 is an apocalyptic number.

1002121211 is a deficient number, since it is larger than the sum of its proper divisors (249675013).

1002121211 is a wasteful number, since it uses less digits than its factorization.

1002121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164450.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1002121211 is about 31656.2981253336. The cubic root of 1002121211 is about 1000.7065709732.

Adding to 1002121211 its reverse (1121212001), we get a palindrome (2123333212).

The spelling of 1002121211 in words is "one billion, two million, one hundred twenty-one thousand, two hundred eleven".