1010121011 has 32 divisors (see below), whose sum is σ = 1146104640. Its totient is φ = 885620736.

The previous prime is 1010120989. The next prime is 1010121037. The reversal of 1010121011 is 1101210101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1010121011 - 2¹⁸ = 1009858867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1010121011.

It is not an unprimeable number, because it can be changed into a prime (1010121611) 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, 1750355 + ... + 1750931.

It is an arithmetic number, because the mean of its divisors is an integer number (35815770).

Almost surely, 2^1010121011 is an apocalyptic number.

1010121011 is a deficient number, since it is larger than the sum of its proper divisors (135983629).

1010121011 is a wasteful number, since it uses less digits than its factorization.

1010121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1010121011 is about 31782.4009634263. The cubic root of 1010121011 is about 1003.3623522498.

Adding to 1010121011 its reverse (1101210101), we get a palindrome (2111331112).

The spelling of 1010121011 in words is "one billion, ten million, one hundred twenty-one thousand, eleven".