1012121001010 has 32 divisors (see below), whose sum is σ = 2102692131072. Its totient is φ = 343577140800.

The previous prime is 1012121000887. The next prime is 1012121001053. The reversal of 1012121001010 is 101001212101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71571502 + ... + 71585641.

It is an arithmetic number, because the mean of its divisors is an integer number (65709129096).

Almost surely, 2^{1012121001010} is an apocalyptic number.

1012121001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012121001010 is an abundant number, since it is smaller than the sum of its proper divisors (1090571130062).

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

1012121001010 is a wasteful number, since it uses less digits than its factorization.

1012121001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143157258.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1012121001010 its reverse (101001212101), we get a palindrome (1113122213111).

The spelling of 1012121001010 in words is "one trillion, twelve billion, one hundred twenty-one million, one thousand, ten".