1051220101 has 8 divisors (see below), whose sum is σ = 1088246880. Its totient is φ = 1014245232.

The previous prime is 1051220047. The next prime is 1051220117. The reversal of 1051220101 is 1010221501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1051220101 is a prime.

It is a super-2 number, since 2×1051220101² = 2210127401492900402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051220701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30786 + ... + 55228.

It is an arithmetic number, because the mean of its divisors is an integer number (136030860).

Almost surely, 2^1051220101 is an apocalyptic number.

It is an amenable number.

1051220101 is a deficient number, since it is larger than the sum of its proper divisors (37026779).

1051220101 is a wasteful number, since it uses less digits than its factorization.

1051220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25955.

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

The square root of 1051220101 is about 32422.5245932515. The cubic root of 1051220101 is about 1016.7898889375.

Adding to 1051220101 its reverse (1010221501), we get a palindrome (2061441602).

The spelling of 1051220101 in words is "one billion, fifty-one million, two hundred twenty thousand, one hundred one".