1051212100 has 18 divisors (see below), whose sum is σ = 2281130474. Its totient is φ = 420484800.

The previous prime is 1051212091. The next prime is 1051212109. The reversal of 1051212100 is 12121501.

It is an interprime number because it is at equal distance from previous prime (1051212091) and next prime (1051212109).

It can be written as a sum of positive squares in 3 ways, for example, as 140138244 + 911073856 = 11838^2 + 30184^2 .

It is a super-2 number, since 2×1051212100² = 2210093758372820000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051212109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5255961 + ... + 5256160.

Almost surely, 2^1051212100 is an apocalyptic number.

1051212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051212100 is an abundant number, since it is smaller than the sum of its proper divisors (1229918374).

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

1051212100 is a wasteful number, since it uses less digits than its factorization.

1051212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10512135 (or 10512128 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 1051212100 is about 32422.4012065732. The cubic root of 1051212100 is about 1016.7873092822.

Adding to 1051212100 its reverse (12121501), we get a palindrome (1063333601).

The spelling of 1051212100 in words is "one billion, fifty-one million, two hundred twelve thousand, one hundred".